Masatoshi Watanabe
121Patents
20h-index
232Co-inventors
93Inventor score
Filing activity: Apr 9, 1974 → Feb 22, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8274078B2 | Metal oxynitride semiconductor containing zinc | Electricity | 355 | Active |
| US5559789A | CDMA/TDD Radio Communication System | Electricity | 103 | Expired |
| US4737008A | Optical transmitting and/or receiving module | Physics | 61 | Expired |
| US4503377A | Variable speed rotary electric machine | Electricity | 54 | Expired |
| US6765895B1 | Spectrum spread communication system | Electricity | 47 | Expired |
| US6028852A | CDMA cellular radio transmission system | Electricity | 45 | Expired |
| US5839397A | Engine cooling system and construction machine | Mechanical Engineering; Lighting; Heating | 39 | Expired |
| US4274027A | Salient pole rotor with shielding rods between adjacent poles | Emerging Cross-Sectional Technologies | 39 | Expired |
| US6144650A | Mobile communication system | Electricity | 38 | Expired |
| US3963950A | Stator of rotary electric machine | Electricity | 38 | Expired |
| US6044104A | Cell search method and mobile station apparatus | Electricity | 35 | Expired |
| US7359886B2 | Injection-molding cost estimation system | Physics | 32 | Expired |
| US4932429A | Screw stopper including anti-freeze device used for water pipe valve | Emerging Cross-Sectional Technologies | 28 | Expired |
| USD658597S1 | Combined switch for working machine | General | 24 | Expired |
| US5802110A | Wireless mobile system | Electricity | 24 | Expired |
| US8532257B2 | X-ray imaging apparatus and X-ray imaging method | Physics | 23 | Active |
| US9257254B2 | Transmissive target, X-ray generating tube including transmissive target, X-ray generating apparatus, and radiography system | Electricity | 23 | Active |
| US6442405B1 | Base station device and radio communication method | Emerging Cross-Sectional Technologies | 23 | Expired |
| US4306165A | Cooling system for rotary electric machines | Electricity | 21 | Expired |
| US5004855A | Process for conversion of ethylbenzene in C.sub.8 aromatic hydrocarbon mixture | Emerging Cross-Sectional Technologies | 20 | Expired |
| US6391296B1 | Method of stabilizing useful protein and useful protein compositions | Human Necessities | 19 | Expired |
| US6195343A | Spectrum spread communication system | Electricity | 18 | Expired |
| US5459760A | Transmitting and receiving apparatus | Electricity | 18 | Expired |
| US3932778A | Cooling device for an electric rotary machine | Electricity | 18 | Expired |
| US4409506A | Induction motor | Electricity | 17 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.