GENTEX CORPORATION
1,392Patents
955Active
1,392Granted
62Portfolio score
Filing activity: Jun 10, 1974 → Dec 16, 2024 · 148 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5803579A | Illuminator assembly incorporating light emitting diodes | Emerging Cross-Sectional Technologies | 878 | Expired |
| US5923027A | Moisture sensor and windshield fog detector using an image sensor | Emerging Cross-Sectional Technologies | 779 | Expired |
| US5990469A | Control circuit for image array sensors | Performing Operations; Transporting | 775 | Expired |
| US5837994A | Control system to automatically dim vehicle head lamps | Performing Operations; Transporting | 753 | Expired |
| US6049171A | Continuously variable headlamp control | Performing Operations; Transporting | 723 | Expired |
| US5451822A | Electronic control system | Performing Operations; Transporting | 681 | Expired |
| US6132072A | Led assembly | Emerging Cross-Sectional Technologies | 630 | Expired |
| US5537003A | Control system for automotive vehicle headlamps and other vehicle equipment | Emerging Cross-Sectional Technologies | 617 | Expired |
| US6297781A | Rearview mirror with integrated microwave receiver | Performing Operations; Transporting | 572 | Expired |
| US6587573B1 | System for controlling exterior vehicle lights | Performing Operations; Transporting | 571 | Expired |
| US6407847B1 | Electrochromic medium having a color stability | Emerging Cross-Sectional Technologies | 558 | Expired |
| US5204778A | Control system for automatic rearview mirrors | Performing Operations; Transporting | 555 | Expired |
| US4902108A | Single-compartment, self-erasing, solution-phase electrochromic devices, solutions for use therein, and uses thereof | Physics | 555 | Expired |
| US6356376B1 | Electrochromic rearview mirror incorporating a third surface metal reflector and a display/signal light | Electricity | 530 | Expired |
| US6539306B2 | Automotive mirror with integrated Loran components | Physics | 520 | Expired |
| US6611610B1 | Vehicle lamp control | Performing Operations; Transporting | 520 | Expired |
| US7149613B2 | Image processing system to control vehicle headlamps or other vehicle equipment | Physics | 516 | Expired |
| US6441943B1 | Indicators and illuminators using a semiconductor radiation emitter package | Electricity | 516 | Expired |
| US4917477A | Automatic rearview mirror system for automotive vehicles | Physics | 503 | Expired |
| US4443057A | Automatic rearview mirror for automotive vehicles | Performing Operations; Transporting | 483 | Expired |
| US6097024A | Moisture sensor and windshield fog detector | Emerging Cross-Sectional Technologies | 478 | Expired |
| US5434407A | Automatic rearview mirror incorporating light pipe | Performing Operations; Transporting | 477 | Expired |
| US5666028A | Automobile headlamp and running light control system | Emerging Cross-Sectional Technologies | 467 | Expired |
| US5790298A | Method of forming optically transparent seal and seal formed by said method | Physics | 433 | Expired |
| US6130448A | Optical sensor package and method of making same | Electricity | 428 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.