Donald Hatch
3Patents
3h-index
4Co-inventors
43Inventor score
Filing activity: Aug 11, 1977 → Aug 29, 1991
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5163887A | Weight collar | Human Necessities | 40 | Expired |
| US4271937A | Valves for hydraulic brakes | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US4121925A | Method of producing grey cast iron brake rotors with uniform friction and wear characteristics | Chemistry; Metallurgy | 4 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.