Fumio Watanabe
87Patents
18h-index
90Co-inventors
87Inventor score
Filing activity: Sep 18, 1980 → Sep 23, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4905080A | Apparatus for collecting television channel data and market research data | Emerging Cross-Sectional Technologies | 163 | Expired |
| US5158895A | Automatic immunological measuring system | Emerging Cross-Sectional Technologies | 155 | Expired |
| US4574304A | Audience rating measuring system for television and video tape recorder | Electricity | 114 | Expired |
| US5482839A | Automatic immunological measuring system | Emerging Cross-Sectional Technologies | 87 | Expired |
| US6464511B1 | IC socket and IC tester | Electricity | 78 | Expired |
| US4622583A | Audience rating measuring system | Electricity | 77 | Expired |
| US5356245A | Cooling and dust collecting apparatus for a machine tool | Emerging Cross-Sectional Technologies | 52 | Expired |
| US4792864A | Apparatus for detecting recorded data in a video tape recorder for audience rating purposes | Physics | 46 | Expired |
| US5290708A | Method of immunoassay measurement | Emerging Cross-Sectional Technologies | 36 | Expired |
| US6002931A | Interworking apparatus for roaming among different mobile networks | Electricity | 29 | Expired |
| US5786939A | Illumination optical system | Physics | 29 | Expired |
| US4368144A | Silver catalyst for production of ethylene oxide | Emerging Cross-Sectional Technologies | 29 | Expired |
| US6091551A | Infrared zoom lens system | Physics | 24 | Expired |
| US5309440A | ISDN user-network interface system | Electricity | 24 | Expired |
| US4620199A | Thermal transfer color printer | Performing Operations; Transporting | 23 | Expired |
| US4671458A | Air conditioning apparatus | Mechanical Engineering; Lighting; Heating | 23 | Expired |
| US5332343A | Cooling and dust collecting apparatus for machine tool | Emerging Cross-Sectional Technologies | 23 | Expired |
| US5978456A | Charging unit price determination/information apparatus and communication system having charging unit price information function | Electricity | 21 | Expired |
| US4946620A | Acid gas absorbent composition | Emerging Cross-Sectional Technologies | 18 | Expired |
| US5204805A | Casing assembly for electronic equipment | Electricity | 18 | Expired |
| US5299065A | Objective with large aperture ratio | Physics | 17 | Expired |
| US5487629A | Cooling and dust collecting apparatus for machine tool | Emerging Cross-Sectional Technologies | 17 | Expired |
| US4620102A | Electron-impact type of ion source with double grid anode | Electricity | 17 | Expired |
| US5327289A | Luminous flux separating optical system | Electricity | 16 | Expired |
| US4533457A | Ion selective electrode device and ion analyzing apparatus | Physics | 15 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.