Philip Underhill
3Patents
3h-index
2Co-inventors
44Inventor score
Filing activity: Jun 21, 1985 → Sep 21, 2004
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6962237B2 | Ladder stand-off | Fixed Constructions | 13 | Expired |
| US4640385A | Portable scaffolding | Fixed Constructions | 7 | Expired |
| US7137482B2 | Ladder stand-off | Fixed Constructions | 4 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.