SnapTrack, Inc.
213Patents
158Active
213Granted
58Portfolio score
Filing activity: Mar 8, 1996 → Mar 8, 2018 · 3 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6677894B2 | Method and apparatus for providing location-based information via a computer network | Physics | 717 | Expired |
| US6131067A | Client-server based remote locator device | Electricity | 708 | Expired |
| US5999124A | Satellite positioning system augmentation with wireless communication signals | Physics | 626 | Expired |
| US5841396A | GPS receiver utilizing a communication link | Electricity | 578 | Expired |
| US6185427A | Distributed satellite position system processing and application network | Physics | 542 | Expired |
| US5874914A | GPS receiver utilizing a communication link | Electricity | 514 | Expired |
| US5945944A | Method and apparatus for determining time for GPS receivers | Electricity | 474 | Expired |
| US6064336A | GPS receiver utilizing a communication link | Electricity | 449 | Expired |
| US5812087A | Method and apparatus for satellite positioning system based time measurement | Physics | 433 | Expired |
| US6133874A | Method and apparatus for acquiring satellite positioning system signals | Electricity | 407 | Expired |
| US5825327A | GPS receivers and garments containing GPS receivers and methods for using these GPS receivers | Electricity | 394 | Expired |
| US6061018A | Method and system for using altitude information in a satellite positioning system | Physics | 369 | Expired |
| US6313786A | Method and apparatus for measurement processing of satellite positioning system (SPS) signals | Physics | 358 | Expired |
| US5781156A | GPS receiver and method for processing GPS signals | Electricity | 337 | Expired |
| US6150980A | Method and apparatus for determining time for GPS receivers | Electricity | 333 | Expired |
| US6002363A | Combined GPS positioning system and communications system utilizing shared circuitry | Electricity | 316 | Expired |
| US6052081A | Method and apparatus for satellite positioning system based time measurement | Physics | 312 | Expired |
| US6208290A | GPS receiver utilizing a communication link | Electricity | 309 | Expired |
| US6215441A | Satellite positioning reference system and method | Physics | 295 | Expired |
| US6421002B2 | GPS receiver utilizing a communication link | Electricity | 227 | Expired |
| US5884214A | GPS receiver and method for processing GPS signals | Electricity | 222 | Expired |
| US6133871A | GPS receiver having power management | Electricity | 219 | Expired |
| US6239742A | Method and apparatus for satellite positioning system based time measurement | Physics | 217 | Expired |
| US5831574A | Method and apparatus for determining the location of an object which may have an obstructed view of the sky | Electricity | 216 | Expired |
| US6411254B1 | Satellite positioning reference system and method | Physics | 211 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.