Hidefumi Ohta
7Patents
4h-index
13Co-inventors
46Inventor score
Filing activity: Nov 30, 1994 → May 24, 2002
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6831112B2 | Polyether, active-hydrogen ingredient, resin-forming composition, and process for producing foam | Chemistry; Metallurgy | 8 | Expired |
| US6164842A | Camera having a lens barrier unit opening/closing mechanism | Physics | 8 | Expired |
| US5729775A | Camera having film counter | Physics | 5 | Expired |
| US5617172A | Camera battery cover structure | Physics | 5 | Expired |
| US5459172A | Process for manufacturing polyurethane foams | Chemistry; Metallurgy | 3 | Expired |
| US5890027A | Miniaturized camera employing motor members | Physics | 1 | Expired |
| US5669024A | Camera having a red-eye reduction lamp arranged with respect to a strobe light generating unit to provide a compact camera | Physics | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.