David M. Hadden
11Patents
8h-index
10Co-inventors
69Inventor score
Filing activity: Jul 5, 1979 → Feb 24, 2017
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5480030A | Reusable, evacuable enclosure for storage of clothing and the like | Emerging Cross-Sectional Technologies | 84 | Expired |
| US4476706A | Remote calibration system | Physics | 72 | Expired |
| US4489590A | Method and apparatus for gas detector calibration | Physics | 36 | Expired |
| US4260950A | Automatic portable pH meter and method with calibration receptacle | Physics | 30 | Expired |
| US5380119A | Resiliently yieldable picture frame corner insert | Emerging Cross-Sectional Technologies | 28 | Expired |
| US5819458A | Reinforced picture frame moulding | Human Necessities | 24 | Expired |
| US5989666A | Aesthetic structure with simulated leading | Emerging Cross-Sectional Technologies | 10 | Expired |
| USD834767S1 | Ergonomic pet comb handle | General | 9 | Active |
| US6324977A | Stamp assembly with embossing member | Performing Operations; Transporting | 6 | Expired |
| US10086894B2 | Safety device | Performing Operations; Transporting | 4 | Active |
| US7942555B2 | Multi-action, battery-powered, trigger-activated lighting system | Emerging Cross-Sectional Technologies | 3 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.