Inventor · disambiguated record
Fumio Sakuma
Also filed as: SAKUMA FUMIO
8 granted patents·53 citations·filing 1976–1979
84Inventor score
Top patents by PatentIndex Score
8 records- 0168US4168455AMotor speed control systemYAMAMOTO ELECTRIC IND CO LTD·Filed 1977·Granted Sep 18, 1979·17 cites·3 claims
- 0265US4251796ASlide-type potentiometerYAMAMOTO ELECTRIC IND CO LTD·Filed 1979·Granted Feb 17, 1981·12 cites·3 claims
- 0348US4143605AMotor driven sewing machineYAMAMOTO ELECTRIC IND CO LTD·Filed 1977·Granted Mar 13, 1979·4 cites·6 claims
- 0445US4246521ADC Motor speed control systemYAMAMOTO ELECTRIC IND CO LTD·Filed 1979·Granted Jan 20, 1981·9 cites·5 claims
- 0544US4142472AControl apparatus for an electrically driven sewing machine with stitch pattern producing deviceYAMAMOTO ELECTRIC IND CO LTD·Filed 1977·Granted Mar 6, 1979·4 cites·5 claims
- 0636US4085692AMotor control apparatus for electrically-driven sewing machineYAMAMOTO ELECTRIC IND CO LTD·Filed 1976·Granted Apr 25, 1978·2 cites·5 claims
- 0734US4228383ASpeed control circuit arrangement for an AC commutator motorYAMAMOTO ELECTRIC IND LTD·Filed 1978·Granted Oct 14, 1980·5 cites·2 claims
- 0821US4078507AElectrically driven sewing machine control apparatusYAMAMOTO ELECTRIC IND CO INC·Filed 1976·Granted Mar 14, 1978·0 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →