Issued Patents All Time
Showing 51–71 of 71 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6275185 | GPS receiver using coarse orbital parameters for achieving a fast time to first fix | — | 2001-08-14 |
| 6225945 | GPS receiver using coarse orbital parameters for achieving a fast time to first fix | — | 2001-05-01 |
| 6092193 | Authentication of accumulated instrument data | David R. Gildea, James M. Janky, John F. Schipper | 2000-07-18 |
| 6014101 | Post-processing of inverse DGPS corrections | — | 2000-01-11 |
| 5936572 | Portable hybrid location determination system | James M. Janky, John F. Schipper | 1999-08-10 |
| 5917444 | Reduction of time to first fix in an SATPS receiver | Ralph F. Eschenbach, Paul Braisted, Chung Y. Lau | 1999-06-29 |
| 5899957 | Carrier phase differential GPS corrections network | — | 1999-05-04 |
| 5838277 | GPS-based controller module | Kevin McKenzie Reeds | 1998-11-17 |
| 5825328 | Precise inverse differential corrections for location determination | John F. Schipper | 1998-10-20 |
| 5754657 | Authentication of a message source | John F. Schipper, Allan M. Pelley, James M. Janky, Len Sheynblat | 1998-05-19 |
| 5731786 | Compaction of SATPS information for subsequent signal processing | Charles Abraham, John F. Schipper | 1998-03-24 |
| 5680140 | Post-processing of inverse differential corrections for SATPS mobile stations | — | 1997-10-21 |
| 5646629 | Memory cartridge for a handheld electronic video game | Dominic Gerard Farmer | 1997-07-08 |
| 5625668 | Position reporting cellular telephone | Peter L. Froeberg | 1997-04-29 |
| 5568152 | Integrated image transfer for remote target location | James M. Janky, John F. Schipper | 1996-10-22 |
| 5563607 | Time and/or location tagging of an event | James Jones | 1996-10-08 |
| 5523763 | System and method for compact storage and transmission of position and residual information usable in differential global positioning | — | 1996-06-04 |
| 5521887 | Time transfer system | — | 1996-05-28 |
| 5495257 | Inverse differential corrections for SATPS mobile stations | — | 1996-02-27 |
| 5477458 | Network for carrier phase differential GPS corrections | — | 1995-12-19 |
| 5323322 | Networked differential GPS system | K. Tysen Mueller, Rudolph M. Kalafus, Leonid Sheynblat | 1994-06-21 |