Tadashi Ito
160Patents
17h-index
167Co-inventors
89Inventor score
Filing activity: Apr 24, 1974 → Mar 22, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4047187A | System for exposure measurement and/or focus detection by means of image senser | Physics | 209 | Expired |
| USRE31370E | System for exposure measurement and/or focus detection by means of image sensor | General | 140 | Expired |
| US4341953A | Focus detecting system | Physics | 53 | Expired |
| US4118713A | Totally opened F. value information input system of lens for a camera with interchangeable lenses | Physics | 49 | Expired |
| US5889337A | Integrated instrument panel switch assembly | Performing Operations; Transporting | 44 | Expired |
| US4346012A | Powdery fire-extinguishing agent, and process for its preparation | Human Necessities | 40 | Expired |
| US6822237B2 | Gamma camera apparatus | Physics | 35 | Expired |
| US4103307A | Exposure control device | Physics | 34 | Expired |
| US4104649A | Adaptor for providing a digital signal indicating the full open F number of an interchangeable photo-taking lens in a single lens reflex camera system | Physics | 33 | Expired |
| US4015198A | Shutter-time-preference single lens reflex camera with automatic film wind-up | Physics | 31 | Expired |
| US4604631A | Control system and method for charge control ink jet printer | Performing Operations; Transporting | 29 | Expired |
| US4304472A | Camera system | Physics | 25 | Expired |
| US4642653A | Multi-tone recording method for ink jet printer | Performing Operations; Transporting | 23 | Expired |
| US5098818A | Silver halide photographic material and method for processing thereof | Emerging Cross-Sectional Technologies | 21 | Expired |
| US4149795A | Digital information transmitting and displaying system for a photographic camera | Physics | 21 | Expired |
| US6033760A | Magnetic recording medium | Emerging Cross-Sectional Technologies | 20 | Expired |
| US4053909A | Data registering equipment for a camera | Physics | 18 | Expired |
| US7504139B2 | Optical cellulose acylate film, polarizing plate and liquid crystal display | Physics | 17 | Expired |
| US4048811A | Combination of air conditioner and ventilating unit provided with total heat exchanger assembly | Emerging Cross-Sectional Technologies | 16 | Expired |
| US4086603A | Electrical driving circuit of camera | Physics | 16 | Expired |
| US4249816A | Photographic camera with a release locking device | Physics | 16 | Expired |
| US6083680A | Photothermographic material | Physics | 16 | Expired |
| US4297018A | Printed circuit unit for a camera | Electricity | 14 | Expired |
| US4011569A | Exposure control system for a camera | Physics | 14 | Expired |
| US3982254A | Digital indication system for a camera | Physics | 14 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.