CA2179169A1 - Synthetic ester lubricant stabilizer composition - Google Patents
Synthetic ester lubricant stabilizer compositionInfo
- Publication number
- CA2179169A1 CA2179169A1 CA002179169A CA2179169A CA2179169A1 CA 2179169 A1 CA2179169 A1 CA 2179169A1 CA 002179169 A CA002179169 A CA 002179169A CA 2179169 A CA2179169 A CA 2179169A CA 2179169 A1 CA2179169 A1 CA 2179169A1
- Authority
- CA
- Canada
- Prior art keywords
- diphenylamine
- reaction
- products
- aryl naphthylamine
- naphthylamine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000003381 stabilizer Substances 0.000 title abstract 2
- 150000002148 esters Chemical class 0.000 title 1
- 239000000314 lubricant Substances 0.000 title 1
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical compound C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 abstract 10
- 239000007795 chemical reaction product Substances 0.000 abstract 3
- 239000000047 product Substances 0.000 abstract 3
- 238000006243 chemical reaction Methods 0.000 abstract 2
- 239000002904 solvent Substances 0.000 abstract 2
- 125000000217 alkyl group Chemical group 0.000 abstract 1
- 239000003963 antioxidant agent Substances 0.000 abstract 1
- 230000003078 antioxidant effect Effects 0.000 abstract 1
- 125000004432 carbon atom Chemical group C* 0.000 abstract 1
- 230000007797 corrosion Effects 0.000 abstract 1
- 238000005260 corrosion Methods 0.000 abstract 1
- 150000004985 diamines Chemical class 0.000 abstract 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 abstract 1
- 150000001451 organic peroxides Chemical class 0.000 abstract 1
- 230000003647 oxidation Effects 0.000 abstract 1
- 238000007254 oxidation reaction Methods 0.000 abstract 1
- 230000001590 oxidative effect Effects 0.000 abstract 1
- 239000000376 reactant Substances 0.000 abstract 1
- 238000013112 stability test Methods 0.000 abstract 1
- 125000005504 styryl group Chemical group 0.000 abstract 1
- 238000012360 testing method Methods 0.000 abstract 1
- 239000012808 vapor phase Substances 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/0009—Transmission of position information to remote stations
- G01S5/0045—Transmission from base station to mobile station
- G01S5/0063—Transmission from base station to mobile station of measured values, i.e. measurement on base station and position calculation on mobile
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/0009—Transmission of position information to remote stations
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/0009—Transmission of position information to remote stations
- G01S5/009—Transmission of differential positioning data to mobile
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
- G01S5/10—Position of receiver fixed by co-ordinating a plurality of position lines defined by path-difference measurements, e.g. omega or decca systems
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
- G01S5/14—Determining absolute distances from a plurality of spaced points of known location
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
- H04B7/18545—Arrangements for managing station mobility, i.e. for station registration or localisation
- H04B7/18547—Arrangements for managing station mobility, i.e. for station registration or localisation for geolocalisation of a station
- H04B7/1855—Arrangements for managing station mobility, i.e. for station registration or localisation for geolocalisation of a station using a telephonic control signal, e.g. propagation delay variation, Doppler frequency variation, power variation, beam identification
Abstract
An antioxidant stabilizer composition is disclosed that is the reaction product of a diphenylamine and an N-aryl naphthylamine in the presence of an organic peroxide. The mole ratio of diphenylamine: N-aryl naphthylamine is from 1:1 to 10:1. This results in more oligomeric reaction products and significantly less unreacted monomeric residual reactants. The resultant product composition comprises diphenylamine homooligomers and diphenylamine/N-aryl naphthylamine cross oligomers. The diphenylamine and N-aryl naphthylamine are desirably substituted with alkyl groups having from 1 to 20 carbon atoms or styryl groups. The reaction temperature is preferably from about 130° to 150°C. The controlled reaction conditions allow the use of solvents with extractable hydrogen atoms without producing significant amounts of dehydrocondensation between the solvent and the diamines. The reaction products have superior oxidative resistance in the Oxidation Corrosion Stability Test (OCS) and Vapor Phase Coker Test over products products produced under other conditions.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/168,851 US5499032A (en) | 1992-12-22 | 1993-12-15 | Navigation and positioning system and method using uncoordinated beacon signals |
US08/166,851 | 1993-12-15 | ||
PCT/US1994/014539 WO1995016765A2 (en) | 1993-12-15 | 1994-12-15 | Synthetic ester lubricant stabilizer composition |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2179169A1 true CA2179169A1 (en) | 1995-06-22 |
CA2179169C CA2179169C (en) | 2005-07-26 |
Family
ID=22613193
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002179169A Expired - Lifetime CA2179169C (en) | 1993-12-15 | 1994-12-15 | Synthetic ester lubricant stabilizer composition |
Country Status (2)
Country | Link |
---|---|
US (2) | US5499032A (en) |
CA (1) | CA2179169C (en) |
Families Citing this family (95)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5835857A (en) * | 1990-03-19 | 1998-11-10 | Celsat America, Inc. | Position determination for reducing unauthorized use of a communication system |
US5499032A (en) * | 1992-12-22 | 1996-03-12 | Terrapin Corporation | Navigation and positioning system and method using uncoordinated beacon signals |
US6181253B1 (en) | 1993-12-21 | 2001-01-30 | Trimble Navigation Limited | Flexible monitoring of location and motion |
US6850734B1 (en) * | 1994-12-23 | 2005-02-01 | Itt Manufacturing Enterprises, Inc. | Position enhanced communication system including system for embedding CDMA navigation beacons under the communications signals of a wireless communication system |
US5774829A (en) * | 1995-12-12 | 1998-06-30 | Pinterra Corporation | Navigation and positioning system and method using uncoordinated beacon signals in conjunction with an absolute positioning system |
US5644318A (en) * | 1996-02-02 | 1997-07-01 | Trimble Navigation Limited | SATPS dynamic surveying from a moving platform |
US5663735A (en) * | 1996-05-20 | 1997-09-02 | Trimble Navigation Limited | GPS receiver using a radio signal for improving time to first fix |
US6236365B1 (en) | 1996-09-09 | 2001-05-22 | Tracbeam, Llc | Location of a mobile station using a plurality of commercial wireless infrastructures |
WO1998010307A1 (en) | 1996-09-09 | 1998-03-12 | Dennis Jay Dupray | Location of a mobile station |
US9134398B2 (en) | 1996-09-09 | 2015-09-15 | Tracbeam Llc | Wireless location using network centric location estimators |
US5898680A (en) * | 1996-11-05 | 1999-04-27 | Worldspace, Inc. | System for providing location-specific data to a user |
US6968737B2 (en) * | 1997-01-02 | 2005-11-29 | Lucent Technologies Inc. | Position determining system using transmitted position information |
US6108315A (en) * | 1997-05-06 | 2000-08-22 | Motorola, Inc. | Radio network and method of operation with location computation |
US6560461B1 (en) | 1997-08-04 | 2003-05-06 | Mundi Fomukong | Authorized location reporting paging system |
US6035202A (en) * | 1997-12-19 | 2000-03-07 | Ericsson Inc. | Method and apparatus for locating a mobile unit |
US5949371A (en) * | 1998-07-27 | 1999-09-07 | Trimble Navigation Limited | Laser based reflectors for GPS positioning augmentation |
JP2000155163A (en) * | 1998-11-20 | 2000-06-06 | Sony Computer Entertainment Inc | Positioning system, method, and device |
AU2744000A (en) * | 1999-01-29 | 2000-08-18 | Daniel S. Kwoh | Apparatus, systems and methods for providing on-demand radio |
US6259991B1 (en) * | 1999-02-10 | 2001-07-10 | X-Cyte Inc. | Environmental location system |
US6472976B1 (en) | 1999-05-21 | 2002-10-29 | Charles M. Wohl | Monitoring location and tracking system |
GB9912724D0 (en) * | 1999-06-01 | 1999-08-04 | Cambridge Positioning Sys Ltd | Radio positioning system |
US8255149B2 (en) | 1999-07-12 | 2012-08-28 | Skybitz, Inc. | System and method for dual-mode location determination |
US6480788B2 (en) | 1999-07-12 | 2002-11-12 | Eagle-Eye, Inc. | System and method for fast acquisition reporting using communication satellite range measurement |
US20040143392A1 (en) | 1999-07-12 | 2004-07-22 | Skybitz, Inc. | System and method for fast acquisition reporting using communication satellite range measurement |
US6560536B1 (en) | 1999-07-12 | 2003-05-06 | Eagle-Eye, Inc. | System and method for rapid telepositioning |
US6347216B1 (en) | 1999-11-04 | 2002-02-12 | Xm Satellite Radio Inc. | Method and system for providing geographic specific services in a satellite communications network |
US7076255B2 (en) | 2000-04-05 | 2006-07-11 | Microsoft Corporation | Context-aware and location-aware cellular phones and methods |
US7421486B1 (en) | 2000-04-05 | 2008-09-02 | Microsoft Corporation | Context translation methods and systems |
US6750883B1 (en) | 2000-04-05 | 2004-06-15 | Microsoft Corporation | Identity-based context aware computing systems and methods |
US7743074B1 (en) | 2000-04-05 | 2010-06-22 | Microsoft Corporation | Context aware systems and methods utilizing hierarchical tree structures |
US7213048B1 (en) | 2000-04-05 | 2007-05-01 | Microsoft Corporation | Context aware computing devices and methods |
US6327535B1 (en) * | 2000-04-05 | 2001-12-04 | Microsoft Corporation | Location beaconing methods and systems |
US7096029B1 (en) | 2000-04-05 | 2006-08-22 | Microsoft Corporation | Context aware computing devices having a common interface and related methods |
US10684350B2 (en) | 2000-06-02 | 2020-06-16 | Tracbeam Llc | Services and applications for a communications network |
US10641861B2 (en) | 2000-06-02 | 2020-05-05 | Dennis J. Dupray | Services and applications for a communications network |
US9875492B2 (en) | 2001-05-22 | 2018-01-23 | Dennis J. Dupray | Real estate transaction system |
US8060389B2 (en) | 2000-06-07 | 2011-11-15 | Apple Inc. | System and method for anonymous location based services |
US6456234B1 (en) | 2000-06-07 | 2002-09-24 | William J. Johnson | System and method for proactive content delivery by situation location |
US8489669B2 (en) | 2000-06-07 | 2013-07-16 | Apple Inc. | Mobile data processing system moving interest radius |
AU2001283182A1 (en) * | 2000-08-09 | 2002-02-18 | Skybitz, Inc. | Frequency translator using a cordic phase rotator |
EP1325561A4 (en) * | 2000-09-18 | 2004-07-28 | Skybitz Inc | System and method for fast code phase and carrier frequency acquisition in gps receiver |
US6944679B2 (en) * | 2000-12-22 | 2005-09-13 | Microsoft Corp. | Context-aware systems and methods, location-aware systems and methods, context-aware vehicles and methods of operating the same, and location-aware vehicles and methods of operating the same |
US7493565B2 (en) | 2000-12-22 | 2009-02-17 | Microsoft Corporation | Environment-interactive context-aware devices and methods |
US7072956B2 (en) * | 2000-12-22 | 2006-07-04 | Microsoft Corporation | Methods and systems for context-aware policy determination and enforcement |
US6492945B2 (en) * | 2001-01-19 | 2002-12-10 | Massachusetts Institute Of Technology | Instantaneous radiopositioning using signals of opportunity |
US6678510B2 (en) * | 2001-02-05 | 2004-01-13 | Nokia Mobile Phones Ltd. | Method, apparatus and system for GPS time synchronization using cellular signal bursts |
US6868129B2 (en) * | 2001-03-12 | 2005-03-15 | Freescale Semiconductor, Inc. | Demodulator for a radio receiver and method of operation |
GB2415071B (en) * | 2002-08-06 | 2006-05-17 | Hewlett Packard Development Co | Method and arrangement for guiding a user along a target path |
US7551675B2 (en) * | 2002-09-27 | 2009-06-23 | Ibiquity Digital Corporation | Method and apparatus for synchronized transmission and reception of data in a digital audio broadcasting system |
EP1445970B1 (en) * | 2003-02-05 | 2009-04-01 | Cambridge Positioning Systems Limited | A method and system for locating a mobile radio receiver in a radio system with multiple tranmitters |
US7054739B2 (en) * | 2003-05-01 | 2006-05-30 | Honeywell International Inc. | Radio navigation system |
US7228139B1 (en) * | 2004-01-28 | 2007-06-05 | On-Board Communications, Inc. | Location processing system |
WO2005125039A1 (en) * | 2004-06-22 | 2005-12-29 | École De Technologie Supérieure | Method for determining the position of an rf transceiver in a known area |
US7353034B2 (en) | 2005-04-04 | 2008-04-01 | X One, Inc. | Location sharing and tracking using mobile phones or other wireless devices |
US7019691B1 (en) * | 2005-04-07 | 2006-03-28 | Pctel,Maryland, Inc. | Method and apparatus for beacon discovery in a spread spectrum cellular radio communication system |
US8981996B2 (en) * | 2005-09-27 | 2015-03-17 | Qualcomm Incorporated | Position location using transmitters with timing offset and phase adjustment |
CN101313621A (en) * | 2005-09-27 | 2008-11-26 | 高通股份有限公司 | Position location using transmitters with timing offset |
US9354297B2 (en) * | 2005-09-27 | 2016-05-31 | Qualcomm Incorporated | Position location using phase-adjusted transmitters |
US20070072621A1 (en) * | 2005-09-27 | 2007-03-29 | Mukkavilli Krishna K | Position location using transmitters with timing offset |
FR2893144B1 (en) * | 2005-11-04 | 2007-12-21 | Thales Sa | AUTOMATIC SELECTION METHOD OF RADIONAVIGATION BEACONS |
US8125382B2 (en) * | 2006-04-25 | 2012-02-28 | Rx Networks Inc. | Autonomous orbit propagation system and method |
US7612712B2 (en) * | 2006-04-25 | 2009-11-03 | Rx Networks Inc. | Distributed orbit modeling and propagation method for a predicted and real-time assisted GPS system |
FR2917823B1 (en) * | 2007-06-22 | 2011-05-13 | Airbus France | METHOD AND DEVICE FOR SIMULATION OF RADIONAVIGATION INSTRUMENTS |
US8774825B2 (en) | 2007-06-28 | 2014-07-08 | Apple Inc. | Integration of map services with user applications in a mobile device |
US8275352B2 (en) | 2007-06-28 | 2012-09-25 | Apple Inc. | Location-based emergency information |
US8332402B2 (en) | 2007-06-28 | 2012-12-11 | Apple Inc. | Location based media items |
US8108144B2 (en) | 2007-06-28 | 2012-01-31 | Apple Inc. | Location based tracking |
US8385946B2 (en) | 2007-06-28 | 2013-02-26 | Apple Inc. | Disfavored route progressions or locations |
US8311526B2 (en) | 2007-06-28 | 2012-11-13 | Apple Inc. | Location-based categorical information services |
US9109904B2 (en) | 2007-06-28 | 2015-08-18 | Apple Inc. | Integration of map services and user applications in a mobile device |
US8762056B2 (en) | 2007-06-28 | 2014-06-24 | Apple Inc. | Route reference |
US9066199B2 (en) | 2007-06-28 | 2015-06-23 | Apple Inc. | Location-aware mobile device |
US8204684B2 (en) | 2007-06-28 | 2012-06-19 | Apple Inc. | Adaptive mobile device navigation |
US8175802B2 (en) | 2007-06-28 | 2012-05-08 | Apple Inc. | Adaptive route guidance based on preferences |
US8180379B2 (en) | 2007-06-28 | 2012-05-15 | Apple Inc. | Synchronizing mobile and vehicle devices |
US8290513B2 (en) | 2007-06-28 | 2012-10-16 | Apple Inc. | Location-based services |
US8355862B2 (en) | 2008-01-06 | 2013-01-15 | Apple Inc. | Graphical user interface for presenting location information |
US9250092B2 (en) | 2008-05-12 | 2016-02-02 | Apple Inc. | Map service with network-based query for search |
US8644843B2 (en) | 2008-05-16 | 2014-02-04 | Apple Inc. | Location determination |
WO2010005731A1 (en) | 2008-06-16 | 2010-01-14 | Skyhook Wireless, Inc. | Methods and systems for determining location using a cellular and wlan positioning system by selecting the best wlan ps solution |
US8369867B2 (en) | 2008-06-30 | 2013-02-05 | Apple Inc. | Location sharing |
US8359643B2 (en) | 2008-09-18 | 2013-01-22 | Apple Inc. | Group formation using anonymous broadcast information |
US8260320B2 (en) | 2008-11-13 | 2012-09-04 | Apple Inc. | Location specific content |
US20100149029A1 (en) * | 2008-12-15 | 2010-06-17 | Sony Ericsson Mobile Communications Ab | System and Method for Obtaining Location Assistance Data |
JP2010187155A (en) * | 2009-02-12 | 2010-08-26 | Funai Electric Co Ltd | Reception device |
US8670748B2 (en) | 2009-05-01 | 2014-03-11 | Apple Inc. | Remotely locating and commanding a mobile device |
US8660530B2 (en) | 2009-05-01 | 2014-02-25 | Apple Inc. | Remotely receiving and communicating commands to a mobile device for execution by the mobile device |
US8666367B2 (en) | 2009-05-01 | 2014-03-04 | Apple Inc. | Remotely locating and commanding a mobile device |
US9538493B2 (en) | 2010-08-23 | 2017-01-03 | Finetrak, Llc | Locating a mobile station and applications therefor |
CN102929126B (en) * | 2012-11-28 | 2014-07-09 | 天津七一二通信广播有限公司 | Method of ship automatic-identification terminal equipment for realizing time synchronization through GPS (Global Positioning System) |
CN102938220B (en) * | 2012-11-28 | 2014-09-10 | 天津七一二通信广播有限公司 | Method for correcting clock of automatic ship identifying terminal equipment |
US9963246B2 (en) * | 2016-03-28 | 2018-05-08 | Amazon Technologies, Inc. | Combining depth and thermal information for object detection and avoidance |
WO2021110534A1 (en) * | 2019-12-06 | 2021-06-10 | Sony Semiconductor Solutions Corporation | Communication device and method |
US20230048916A1 (en) * | 2020-10-26 | 2023-02-16 | James Albert Flynn | System For Accurate Geospatial Location And Time Transfer Using Radio Transmissions Without Satellite Signals |
US20220128679A1 (en) * | 2020-10-26 | 2022-04-28 | James Albert Flynn | System For Accurate Geospatial Location And Time Transfer Using Radio Transmissions Without Satellite Signals |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3757340A (en) * | 1958-06-27 | 1973-09-04 | Itt | Radio location system |
DE1934960C3 (en) * | 1969-07-10 | 1979-01-25 | Prakla-Seismos Gmbh, 3000 Hannover | Method and arrangement for the precise location of points |
US4169245A (en) * | 1972-07-26 | 1979-09-25 | E-Systems, Inc. | Spectral correlation |
US3886554A (en) * | 1973-04-23 | 1975-05-27 | Motorola Inc | Method and apparatus for improving the accuracy of a vehicle location system |
US3889264A (en) * | 1973-05-21 | 1975-06-10 | Nasa | Vehicle locating system utilizing AM broadcasting station carriers |
US4054880A (en) * | 1976-01-19 | 1977-10-18 | E-Systems, Inc. | Position fixing system utilizing plural commercial broadcast transmissions and having frequency correction |
JPS55103476A (en) * | 1979-02-02 | 1980-08-07 | Nec Corp | Radio position measuring system |
US4651156A (en) * | 1982-02-08 | 1987-03-17 | Mcgraw-Edison Co. | Integrated radio location and communication system |
US4555707A (en) * | 1982-08-27 | 1985-11-26 | Connelly Will A | Television pulsed navigation system |
US4665404A (en) * | 1983-10-24 | 1987-05-12 | Offshore Navigation, Inc. | High frequency spread spectrum positioning system and method therefor |
FR2561050B1 (en) * | 1984-03-07 | 1986-09-19 | Commissariat Energie Atomique | METHOD FOR MONITORING VEHICLE MOVEMENTS FROM A CENTRAL STATION |
US4675863A (en) * | 1985-03-20 | 1987-06-23 | International Mobile Machines Corp. | Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels |
US4916455A (en) * | 1987-02-20 | 1990-04-10 | Scientific Development Inc. | Locating system and method |
US4799062A (en) * | 1987-04-27 | 1989-01-17 | Axonn Corporation | Radio position determination method and apparatus |
BR8807655A (en) * | 1987-08-10 | 1990-06-05 | Peter James Duffett Smith | NAVIGATION AND TRACKING SYSTEM |
US5173710A (en) * | 1991-08-15 | 1992-12-22 | Terrapin Corporation | Navigation and positioning system and method using uncoordinated beacon signals |
US5499032A (en) * | 1992-12-22 | 1996-03-12 | Terrapin Corporation | Navigation and positioning system and method using uncoordinated beacon signals |
US5422813A (en) * | 1992-12-17 | 1995-06-06 | Stanford Telecommunications, Inc. | No-outage GPS/commercial RF positioning system |
-
1993
- 1993-12-15 US US08/168,851 patent/US5499032A/en not_active Expired - Lifetime
-
1994
- 1994-12-15 CA CA002179169A patent/CA2179169C/en not_active Expired - Lifetime
-
1996
- 1996-03-12 US US08/614,093 patent/US5689270A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US5499032A (en) | 1996-03-12 |
CA2179169C (en) | 2005-07-26 |
US5689270A (en) | 1997-11-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKEX | Expiry |
Effective date: 20141215 |