Gerald Thomas Griggs
8Patents
7h-index
6Co-inventors
52Inventor score
Filing activity: Feb 9, 1993 → Jan 26, 2012
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6209670A | Clutch for multi-directional transportation device | Human Necessities | 86 | Expired |
| US5445233A | Multi-directional motorized wheelchair | Emerging Cross-Sectional Technologies | 65 | Expired |
| US5348336A | Walking aid | Human Necessities | 64 | Expired |
| US6179076A | Motorized chair base | Emerging Cross-Sectional Technologies | 63 | Expired |
| US8280561B2 | Powered wheelchair | Emerging Cross-Sectional Technologies | 10 | Active |
| US8128065B2 | Lifting assist device | Human Necessities | 9 | Active |
| US6938285B2 | Patient transfer device | Human Necessities | 8 | Expired |
| US8403299B2 | Lifting assist device | Human Necessities | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.