Transpec, Inc.
34Patents
0Active
34Granted
36Portfolio score
Filing activity: Apr 19, 1982 → Nov 1, 2004
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5604480A | Flashing caution/stop bus light assembly | Performing Operations; Transporting | 125 | Expired |
| US5634287A | Illuminated sign housing assembly | Emerging Cross-Sectional Technologies | 88 | Expired |
| US4759682A | Vehicle entrance ramp | Emerging Cross-Sectional Technologies | 54 | Expired |
| US4895065A | Combined static and powered vent device | Performing Operations; Transporting | 52 | Expired |
| US7166023B2 | Vent assembly with single piece cover | Performing Operations; Transporting | 40 | Expired |
| US4877266A | Vehicle safety system | Performing Operations; Transporting | 39 | Expired |
| US4597601A | Energy absorbing vehicle bumper | Performing Operations; Transporting | 37 | Expired |
| US4685858A | Vehicle entrance ramp | Emerging Cross-Sectional Technologies | 32 | Expired |
| US6572182B2 | Motorized vent and escape hatch assembly | Fixed Constructions | 25 | Expired |
| US5357239A | Actuating device for bus safety gate and stop sign | Performing Operations; Transporting | 25 | Expired |
| US4592269A | Static vent device | Performing Operations; Transporting | 24 | Expired |
| US4412404A | Combined vent and escape hatch | Emerging Cross-Sectional Technologies | 24 | Expired |
| US5687500A | Stop sign housing with flashing lights | Emerging Cross-Sectional Technologies | 22 | Expired |
| US5796331A | Illuminated pivotal sign assembly | Physics | 22 | Expired |
| US4495731A | Vehicle hatch mounting assembly | Performing Operations; Transporting | 21 | Expired |
| US4827548A | Vehicle entrance ramp | Emerging Cross-Sectional Technologies | 18 | Expired |
| US6515583B1 | Vehicle signal light assembly | Emerging Cross-Sectional Technologies | 18 | Expired |
| US5719553A | Sealed electrical actuator assembly for hinged vehicle safety devices | Performing Operations; Transporting | 15 | Expired |
| US4509782A | Energy absorbing vehicle bumper | Performing Operations; Transporting | 13 | Expired |
| US6099933A | Illuminated sign assembly | Emerging Cross-Sectional Technologies | 13 | Expired |
| US4964673A | Vehicle hatch mounting assembly | Performing Operations; Transporting | 13 | Expired |
| US4433506A | Combined vent and escape hatch | Emerging Cross-Sectional Technologies | 12 | Expired |
| US6765481B2 | Electrical actuator assembly for hinged vehicle safety devices | Physics | 12 | Expired |
| US6234105A | Crossing arm assembly | Performing Operations; Transporting | 11 | Expired |
| US4715630A | Energy absorbing vehicle bumper | Performing Operations; Transporting | 10 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.