Yasuhiro Nanba
29Patents
9h-index
23Co-inventors
75Inventor score
Filing activity: Dec 14, 1972 → May 19, 2006
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5241575A | Solid-state image sensing device providing a logarithmically proportional output signal | Emerging Cross-Sectional Technologies | 54 | Expired |
| US4313654A | Automatic rangefinder system for photographic camera with light emitting and receiving means | Physics | 40 | Expired |
| US3950765A | Exposure control devices for photographic cameras | Physics | 18 | Expired |
| US3964073A | Exposure control devices for photographic cameras | Physics | 16 | Expired |
| US3990799A | Digital exposure meter | Electricity | 14 | Expired |
| US4464038A | Distance measuring device for use in a camera | Physics | 13 | Expired |
| US4251144A | Rangefinding system | Physics | 13 | Expired |
| US4209241A | Photoelectric rangefinder | Physics | 12 | Expired |
| US5315554A | Dynamic random access memory device with intermediate voltage generator interrupting power supply in test operation | Physics | 10 | Expired |
| US3938894A | Focus detecting device | Physics | 8 | Expired |
| US4167315A | Apparatus for dating camera film | Physics | 7 | Expired |
| US4174160A | Programmed automatic exposure control circuitry | Physics | 7 | Expired |
| US3936842A | Automatic exposure time control circuitry for a camera using a photodiode as a light measuring element | Physics | 6 | Expired |
| US6445637B1 | Semiconductor memory device with a refresh function | Physics | 5 | Expired |
| US4077043A | Exposure indicating device | Physics | 5 | Expired |
| US3970842A | Automatic focus control device | Physics | 5 | Expired |
| US4062023A | Exposure control devices for photographic cameras | Physics | 4 | Expired |
| US4496834A | Focus detecting photoelectric device and focus detecting system | Electricity | 4 | Expired |
| US6930935B2 | Redundancy circuit and semiconductor device using the same | Physics | 4 | Expired |
| US6430092B2 | Memory device with booting circuit capable of pre-booting before wordline selection | Physics | 4 | Expired |
| US4039824A | Focus detecting photoelectric device | Physics | 4 | Expired |
| US3938893A | Image focussing mechanism | Physics | 3 | Expired |
| US4193676A | Data photographic device for camera | Physics | 3 | Expired |
| US3971045A | Light measuring circuit | Physics | 2 | Expired |
| US4040068A | Exposure time control device for an electric shutter in a single reflex camera with through the lens measuring system | Physics | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.