Inventor · disambiguated record
Yoshiaki Doyama
Also filed as: DOYAMA YOSHIAKI
14 granted patents·2 pending applications·678 citations·filing 1985–2023
94Inventor score
Files withMATSUSHITA ELECTRIC INDUSTRIAL CO LTD11PANASONIC IP MAN CO LTD2WALBRO LLC2DOYAMA YOSHIAKI1
Top patents by PatentIndex Score
16 records- 0197US6121736AControl apparatus for motor, and motor unit having the control apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1999·Granted Sep 19, 2000·151 cites·23 claims
- 0292US10738741B2Charge forming device with adjustable valve limiterWALBRO LLC·Filed 2017·Granted Aug 11, 2020·4 cites·15 claims
- 0392US5555894AForce sensation exhibiting device, data input device and data input equipmentMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1994·Granted Sep 17, 1996·165 cites·20 claims
- 0490US6320772B1Converter circuit having control means with capability to short-circuit converter outputMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Nov 20, 2001·75 cites·18 claims
- 0586US5646499AInverter control apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1995·Granted Jul 8, 1997·75 cites·17 claims
- 0682US5247806AMulti-system air conditionerMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1991·Granted Sep 28, 1993·53 cites·24 claims
- 0782US4794472AVideo tape reproducing apparatus with a processor that time-shares different operationsMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1986·Granted Dec 27, 1988·29 cites·21 claims
- 0881US6232730B1Brushless motor driving circuit and a method of controlling the brushless motor driving circuitMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1999·Granted May 15, 2001·44 cites·10 claims
- 0978US5778885AForce sensation exhibiting device data input device and data input equipmentMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1996·Granted Jul 14, 1998·39 cites·4 claims
- 1067US11293380B2Charge forming device with adjustable valve limiterWALBRO LLC·Filed 2020·Granted Apr 5, 2022·0 cites·19 claims
- 1163US5222371AAir conditioner of multichamber typeMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1990·Granted Jun 29, 1993·28 cites·3 claims
- 1263US4791507AApparatus for reproducing information at variable speeds from a magnetic tapeMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1985·Granted Dec 13, 1988·13 cites·16 claims
- 1359US2025290678A1Refrigeration cycle devicePANASONIC IP MAN CO LTD·Filed 2023·Application pending·0 cites
- 1459US2025290502A1Refrigeration cycle devicePANASONIC IP MAN CO LTD·Filed 2023·Application pending·0 cites
- 1536US8664899B2Motor drive control deviceDOYAMA YOSHIAKI·Filed 2009·Granted Mar 4, 2014·1 cites·9 claims
- 1631US4764819AMethod and apparatus for helical scan type magnetic recording and reproducing with a rotary magnetic headMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1986·Granted Aug 16, 1988·1 cites·12 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →