David A. Birt
10Patents
5h-index
9Co-inventors
59Inventor score
Filing activity: May 14, 1979 → Dec 4, 2002
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6302474A | Door reinforcement device | Performing Operations; Transporting | 16 | Expired |
| US5536019A | Light unit having a sealing member for a light bulb containing pressure relief means | Emerging Cross-Sectional Technologies | 12 | Expired |
| US5060127A | Motor vehicle headlamp | Performing Operations; Transporting | 8 | Expired |
| US4305119A | Vehicle headlamp | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US5003447A | Lamp reflector | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US4520434A | Diffusion cover for a motor vehicle headlamp | Mechanical Engineering; Lighting; Heating | 4 | Expired |
| US6688681B2 | Sun blind assembly | Performing Operations; Transporting | 4 | Expired |
| US4246631A | Vehicle headlamp | Mechanical Engineering; Lighting; Heating | 3 | Expired |
| US4575787A | Road vehicle headlamp | Mechanical Engineering; Lighting; Heating | 3 | Expired |
| US6884941B2 | Housing assembly | Mechanical Engineering; Lighting; Heating | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.