Ricon Corp.
52Patents
13Active
52Granted
43Portfolio score
Filing activity: Oct 20, 1977 → Sep 28, 2017 · 6 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5636399A | Movable ramp assembly | Emerging Cross-Sectional Technologies | 80 | Expired |
| US6179545A | Flip-over ramp | Emerging Cross-Sectional Technologies | 75 | Expired |
| US5832555A | Compact moveable ramp assembly | Emerging Cross-Sectional Technologies | 64 | Expired |
| US5556250A | Vehicle lifts | Emerging Cross-Sectional Technologies | 44 | Expired |
| US4272180A | Electrostatic copying machine | Physics | 43 | Expired |
| US6802095B1 | Ramp assembly having a lift and lock mechanism | Emerging Cross-Sectional Technologies | 43 | Expired |
| US4353436A | Manual wheelchair lift | Human Necessities | 40 | Expired |
| US6086314A | Foldable platform wheelchair lift | Emerging Cross-Sectional Technologies | 39 | Expired |
| US6098995A | Vehicle suspension for providing kneeling function to a vehicle having a lowered floor | Performing Operations; Transporting | 37 | Expired |
| US5533594A | Chairlift with positioning carriage and swivel mechanism with safety interlock | Performing Operations; Transporting | 35 | Expired |
| US6379102B1 | Wheelchair lift with foldable platform | Emerging Cross-Sectional Technologies | 35 | Expired |
| US6698998B2 | Foldable ramp | Emerging Cross-Sectional Technologies | 32 | Expired |
| US5944473A | Locking wheelchair lift | Emerging Cross-Sectional Technologies | 31 | Expired |
| US6203266A | Power safety barrier for wheelchair lift | Emerging Cross-Sectional Technologies | 31 | Expired |
| US7001132B2 | Foldable ramp | Emerging Cross-Sectional Technologies | 31 | Expired |
| US6022066A | Door extension for vehicle doors | Performing Operations; Transporting | 30 | Expired |
| US5605431A | Locking wheelchair lift | Human Necessities | 29 | Expired |
| US6102648A | Driving mechanism for vehicle lifts | Emerging Cross-Sectional Technologies | 28 | Expired |
| US5228538A | Passenger lift with an electric safety interlock | Emerging Cross-Sectional Technologies | 28 | Expired |
| US5373915A | Passenger lift with an electric safety interlock | Emerging Cross-Sectional Technologies | 27 | Expired |
| US6585474B1 | Wheelchair lift with foldable platform | Emerging Cross-Sectional Technologies | 26 | Expired |
| US6062805A | Vehicular wheelchair step lift | Emerging Cross-Sectional Technologies | 26 | Expired |
| US5234311A | Wheelchair lift with adjustable posts | Emerging Cross-Sectional Technologies | 25 | Expired |
| US5794381A | Selectively engageable motor drive assembly | Emerging Cross-Sectional Technologies | 20 | Expired |
| US5613321A | Releasable drive mechanism | Fixed Constructions | 20 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.