VAPOR CORP.
91Patents
2Active
91Granted
39Portfolio score
Filing activity: Sep 6, 1974 → Mar 15, 2014
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4241403A | Method for automated analysis of vehicle performance | Emerging Cross-Sectional Technologies | 55 | Expired |
| US4180366A | Lift assembly for transit vehicles | Emerging Cross-Sectional Technologies | 49 | Expired |
| US4275664A | Step-platform operation | Performing Operations; Transporting | 45 | Expired |
| US4236215A | Vehicular data handling and control system | Performing Operations; Transporting | 44 | Expired |
| US3979790A | Totally enclosed door check | Fixed Constructions | 43 | Expired |
| US4583466A | Step lift for railway cars | Emerging Cross-Sectional Technologies | 39 | Expired |
| US4901474A | Pneumatic door operator having novel pneumatic actuator and lock | Emerging Cross-Sectional Technologies | 36 | Expired |
| US5775232A | Bridge plate for a mass transit vehicle | Performing Operations; Transporting | 34 | Expired |
| US4043143A | Locomotive environmental system | Performing Operations; Transporting | 30 | Expired |
| US4098093A | Unitary cab air cooling system for large off road vehicles | Performing Operations; Transporting | 30 | Expired |
| US4143642A | High temperature thermal storage system utilizing solar energy units | Emerging Cross-Sectional Technologies | 26 | Expired |
| US4402341A | Pilot operated relief valve | Emerging Cross-Sectional Technologies | 26 | Expired |
| US4087939A | Door operator with locking mechanism | Fixed Constructions | 26 | Expired |
| US4133365A | Obstruction sensing edge for a bifolding door | Fixed Constructions | 25 | Expired |
| US4704870A | Thermoelectric cooler | Mechanical Engineering; Lighting; Heating | 25 | Expired |
| US4113063A | Mechanical stored energy positioning actuator | Emerging Cross-Sectional Technologies | 23 | Expired |
| US4552335A | Ball valve | Mechanical Engineering; Lighting; Heating | 23 | Expired |
| US4006603A | Air conditioning system for a railway vehicle | Mechanical Engineering; Lighting; Heating | 23 | Expired |
| US4882876A | Door operator with locking mechanism | Fixed Constructions | 22 | Expired |
| US4091837A | Freezeproof breather valve | Emerging Cross-Sectional Technologies | 20 | Expired |
| US4024444A | Drive circuit for induction motor used in air conditioning system of a railway vehicle | Electricity | 19 | Expired |
| US3964040A | Circuit for detecting burned-out lamp for a buoy lamp changer | Electricity | 19 | Expired |
| US4616528A | Valve actuator with continuous manual override | Mechanical Engineering; Lighting; Heating | 19 | Expired |
| US4071282A | Slip-slide detector system for railway car wheels | Performing Operations; Transporting | 19 | Expired |
| US4114465A | Modulating failsafe valve actuator using differential gearing | Emerging Cross-Sectional Technologies | 18 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.