Michihiro Torii
12Patents
8h-index
29Co-inventors
68Inventor score
Filing activity: Sep 25, 1975 → Aug 4, 1993
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4841190A | Resin-filled permanent-magnet stepping motor | Electricity | 52 | Expired |
| US4363984A | Digitally controlled brushless motor | Emerging Cross-Sectional Technologies | 19 | Expired |
| US4540500A | Low temperature sinterable oxide magnetic material | Chemistry; Metallurgy | 14 | Expired |
| US4368402A | H-Type ceramic resonator | Electricity | 10 | Expired |
| US4393373A | Piezoelectric audible sound generator | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4376961A | Magnetic drum/head system for selectively generating recorded voice information | Physics | 10 | Expired |
| US4057606A | Method of producing anisotropic ferrite magnet | Emerging Cross-Sectional Technologies | 9 | Expired |
| US5435859A | Method of producing a rare earth bond magnet | Electricity | 9 | Expired |
| US4418471A | Method of producing a stator yoke of a small-sized motor | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4609956A | Magnetic drum cassette with magnetic drum having voice information recorded thereon | Physics | 3 | Expired |
| US4382839A | Process for producing ferrite single crystals | Chemistry; Metallurgy | 1 | Expired |
| US4302279A | Process for producing ferrite single crystal for high frequency | Emerging Cross-Sectional Technologies | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.