Trimble Navigation Limited
1,190Patents
509Active
1,190Granted
58Portfolio score
Filing activity: May 7, 1984 → Dec 8, 2021 · 221 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5938721A | Position based personal digital assistant | Physics | 951 | Expired |
| US6611755B1 | Vehicle tracking, communication and fleet management system | Electricity | 690 | Expired |
| US6282362A | Geographical position/image digital recording and display system | Electricity | 654 | Expired |
| US5485161A | Vehicle speed control based on GPS/MAP matching of posted speeds | Physics | 599 | Expired |
| US5418537A | Location of missing vehicles | Physics | 477 | Expired |
| US5528248A | Personal digital location assistant including a memory cartridge, a GPS smart antenna and a personal computing device | Physics | 459 | Expired |
| US5416712A | Position and velocity estimation system for adaptive weighting of GPS and dead-reckoning information | Physics | 449 | Expired |
| US5568119A | Arrestee monitoring with variable site boundaries | Physics | 447 | Expired |
| US5625668A | Position reporting cellular telephone | Physics | 442 | Expired |
| US5592173A | GPS receiver having a low power standby mode | Emerging Cross-Sectional Technologies | 423 | Expired |
| US5552772A | Location of emergency service workers | Physics | 418 | Expired |
| US5751245A | Vehicle route and schedule exception reporting system | Physics | 413 | Expired |
| US6266612A | Position based personal digital assistant | Physics | 399 | Expired |
| US5323322A | Networked differential GPS system | Physics | 398 | Expired |
| US6199000A | Methods and apparatus for precision agriculture operations utilizing real time kinematic global positioning system systems | Emerging Cross-Sectional Technologies | 381 | Expired |
| US6411899B1 | Position based personal digital assistant | Physics | 364 | Expired |
| US5742509A | Personal tracking system integrated with base station | Physics | 345 | Expired |
| US5892454A | Hybrid monitoring of location of a site confinee | Physics | 342 | Expired |
| US5202829A | Exploration system and method for high-accuracy and high-confidence level relative position and velocity determinations | Physics | 336 | Expired |
| US5786789A | GPS and cellphone unit having add-on modules | Electricity | 329 | Expired |
| US6127945A | Mobile personal navigator | Electricity | 326 | Expired |
| US6147598A | Vehicle theft system including a handheld computing device | Performing Operations; Transporting | 313 | Expired |
| US5422816A | Portable personal navigation tracking system | Electricity | 311 | Expired |
| US5311197A | Event-activated reporting of vehicle location | Physics | 310 | Expired |
| US5936572A | Portable hybrid location determination system | Physics | 302 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.