Inventor · disambiguated record
Hiroshi Hayashida
Also filed as: HAYASHIDA HIROSHI
14 granted patents·437 citations·filing 1974–1989
94Inventor score
Files withHITACHI LTD14
Top patents by PatentIndex Score
14 records- 0196US4599561ADevice for detecting the relative and absolute position of a moving bodyHITACHI LTD·Filed 1982·Granted Jul 8, 1986·73 cites·12 claims
- 0295US4558265AMethod and apparatus for position control of an electric motorHITACHI LTD·Filed 1983·Granted Dec 10, 1985·93 cites·6 claims
- 0391US4473786AMethod for controlling angular position and apparatus thereforHITACHI LTD·Filed 1982·Granted Sep 25, 1984·59 cites·11 claims
- 0487US4418372AMagnetic rotary encoderHITACHI LTD·Filed 1980·Granted Nov 29, 1983·36 cites·21 claims
- 0582US4628259AMagneto resistive sensor for detecting movement of a rotating bodyHITACHI LTD·Filed 1981·Granted Dec 9, 1986·27 cites·16 claims
- 0671US4099108AVariable speed control apparatus for induction motorHITACHI LTD·Filed 1976·Granted Jul 4, 1978·17 cites·8 claims
- 0771US3949283AControl system for brushless motorHITACHI LTD·Filed 1974·Granted Apr 6, 1976·17 cites·5 claims
- 0870US4580084AMethod and system for controlling speed of electric motorHITACHI LTD·Filed 1982·Granted Apr 1, 1986·25 cites·22 claims
- 0964US4638225AMethod and apparatus therefor in motor speed controlHITACHI LTD·Filed 1986·Granted Jan 20, 1987·19 cites·6 claims
- 1062US4403187AMagnetic head for sensing the position of a moving memberHITACHI LTD·Filed 1980·Granted Sep 6, 1983·15 cites·6 claims
- 1161US4983875AActuatorHITACHI LTD·Filed 1989·Granted Jan 8, 1991·28 cites·27 claims
- 1256US4890024ALow-speed high-torque motorHITACHI LTD·Filed 1988·Granted Dec 26, 1989·18 cites·2 claims
- 1343US4983893AActuator with stepping motion functionHITACHI LTD·Filed 1984·Granted Jan 8, 1991·8 cites·10 claims
- 1431US4586152AMethod and apparatus for counting an infinite length with a counter of finite lengthHITACHI LTD·Filed 1983·Granted Apr 29, 1986·2 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →