Rolf Kramer
11Patents
6h-index
16Co-inventors
63Inventor score
Filing activity: Dec 15, 1975 → Apr 23, 2002
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4029292A | Globe valve construction | Mechanical Engineering; Lighting; Heating | 19 | Expired |
| US5926621A | Method for automatic diagnosis of malfunctions | Physics | 17 | Expired |
| US4278030A | Truck for high speed rail cars | Performing Operations; Transporting | 15 | Expired |
| US4610340A | Overload safety on clutches | Mechanical Engineering; Lighting; Heating | 15 | Expired |
| USD435610S | Jumping snail | General | 10 | Expired |
| US5261330A | Drop-frame urban rapid transit car | Performing Operations; Transporting | 8 | Expired |
| US4206571A | Bunker closure door operating mechanism | Physics | 6 | Expired |
| US4569293A | Freight car construction | Performing Operations; Transporting | 5 | Expired |
| US3999489A | Sliding wall arrangement for covered railroad freight cars | Fixed Constructions | 5 | Expired |
| US4955293A | Slider | Performing Operations; Transporting | 5 | Expired |
| USD496073S1 | Jumping riding toy | General | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.