Inventor · disambiguated record
Akio Koizumi
Also filed as: KOIZUMI AKIO · NAKAZAWA HIROSHI
9 granted patents·240 citations·filing 1977–1981
90Inventor score
Files withSONY CORP9
Top patents by PatentIndex Score
9 records- 0196US4236198ASwitching regulatorSONY CORP·Filed 1978·Granted Nov 25, 1980·75 cites·7 claims
- 0288US4335423ATransformerSONY CORP·Filed 1980·Granted Jun 15, 1982·35 cites·15 claims
- 0387US4180852AControl circuit for use in a switching-type regulatorSONY CORP·Filed 1978·Granted Dec 25, 1979·34 cites·10 claims
- 0484US4210947AProtective circuit for a switching regulatorSONY CORP·Filed 1978·Granted Jul 1, 1980·29 cites·9 claims
- 0584US4087850APower supply circuitSONY CORP·Filed 1977·Granted May 2, 1978·30 cites·5 claims
- 0669US4476436APower amplifierSONY CORP·Filed 1981·Granted Oct 9, 1984·14 cites·9 claims
- 0754US4276587ADC to DC ConverterSONY CORP·Filed 1978·Granted Jun 30, 1981·9 cites·7 claims
- 0850US4223378ASwitching regulatorSONY CORP·Filed 1978·Granted Sep 16, 1980·8 cites·11 claims
- 0945US4236196ASwitching regulatorSONY CORP·Filed 1978·Granted Nov 25, 1980·6 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →