Yasumasa Tomori
15Patents
11h-index
8Co-inventors
57Inventor score
Filing activity: Dec 10, 1979 → Dec 2, 1986
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4822153A | One-hand zoom lens barrel | Physics | 37 | Expired |
| US4627691A | Cam grooves for displacing lenses | Physics | 32 | Expired |
| US4324457A | Macro photographic change-over device for zoom lens barrel | Physics | 22 | Expired |
| US4523815A | Zoom lens barrel for macrofocusing | Physics | 21 | Expired |
| US4518239A | Intermediate adapter for camera | Physics | 16 | Expired |
| US4416526A | Interchangeable lens barrel | Physics | 15 | Expired |
| US4400075A | Automatic focus camera with interchangeable lens | Physics | 14 | Expired |
| US4309077A | Lens barrel capable of automatic and manual focalizing operations | Physics | 13 | Expired |
| US4333712A | Change-over device for zoom lens | Physics | 13 | Expired |
| US4359276A | Interchangeable lens barrel | Physics | 12 | Expired |
| US4589750A | Adapter for connecting single-lens reflex camera lens to video camera | Physics | 12 | Expired |
| US4443085A | Camera with an interchangeable lens | Physics | 10 | Expired |
| US4304463A | Lens barrel automatic focalization device | Physics | 7 | Expired |
| US4413893A | Interchangeable lens barrel | Physics | 6 | Expired |
| US4429973A | Compensation for diaphragm control for SLR camera | Physics | 4 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.