DuWayne E. Kramer, Jr.
8Patents
8h-index
5Co-inventors
62Inventor score
Filing activity: Sep 29, 1983 → Jul 20, 2009
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4570739A | Personal mobility vehicle | Emerging Cross-Sectional Technologies | 85 | Expired |
| US6494474B1 | Adjustable wheelchair anti-tip assembly | Emerging Cross-Sectional Technologies | 74 | Expired |
| US5816614A | Tiller assembly for personal mobility vehicles | Emerging Cross-Sectional Technologies | 46 | Expired |
| US6220382A | Powered wheelchair with separating frame | Performing Operations; Transporting | 38 | Expired |
| US6290011A | Front wheel/rear wheel drive convertible wheelchair | Emerging Cross-Sectional Technologies | 27 | Expired |
| US4834409A | Personal mobility vehicle with expansible wheel base and wheel track | Emerging Cross-Sectional Technologies | 25 | Expired |
| US7942445B2 | Personal mobility vehicle with anti-tip suspension | Emerging Cross-Sectional Technologies | 24 | Active |
| US7562903B2 | Personal mobility vehicle with anti-tip suspension | Emerging Cross-Sectional Technologies | 8 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.