David O'Brien
7Patents
3h-index
13Co-inventors
54Inventor score
Filing activity: Sep 19, 1989 → Oct 20, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5080478A | Apparatus for testing dark adaptation | Human Necessities | 17 | Expired |
| US6991398B2 | Tool coupler | Emerging Cross-Sectional Technologies | 9 | Expired |
| US6957705B2 | Loader linkage | Fixed Constructions | 3 | Expired |
| US10815634B2 | Loader attachments coupler | Fixed Constructions | 0 | Active |
| US11807509B2 | Material handling apparatus for a utility vehicle | Performing Operations; Transporting | 0 | Active |
| US11299380B2 | Convertible carriage | Fixed Constructions | 0 | Active |
| US11155979B2 | Loader attachments coupler | Fixed Constructions | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.