Inventor · disambiguated record
Makoto Hagiwara
Also filed as: HAGIWARA MAKOTO
14 granted patents·1 pending application·284 citations·filing 1985–2019
92Inventor score
Files withTOKYO INST TECH4VISCODRIVE JAPAN4GKN VISCODRIVE GMBH3TOCHIGI FUJI SANGYO KK2AKAGI HIROFUMI1
Top patents by PatentIndex Score
15 records- 0198US4805486ALocking differential gear assemblyTOCHIGI FUJI SANGYO KK·Filed 1987·Granted Feb 21, 1989·177 cites·5 claims
- 0283US4735108APower transmission deviceTOCHIGI FUJI SANGYO KK·Filed 1985·Granted Apr 5, 1988·29 cites·3 claims
- 0372US10498233B2Bidirectional chopper circuitTOKYO INST TECH·Filed 2016·Granted Dec 3, 2019·2 cites·8 claims
- 0472US9379632B2Power converter and method for controlling sameAKAGI HIROFUMI·Filed 2012·Granted Jun 28, 2016·6 cites·10 claims
- 0569US9496805B2Single-phase power converter, three-phase two-phase power converter, and three-phase power converterTOKYO INST TECH·Filed 2012·Granted Nov 15, 2016·3 cites·18 claims
- 0667US5616096ADifferential gear unitVISCODRIVE JAPAN·Filed 1995·Granted Apr 1, 1997·22 cites·5 claims
- 0754US5080210AViscous couplingVISCODRIVE JAPAN·Filed 1990·Granted Jan 14, 1992·19 cites·8 claims
- 0847US10103645B2Power converterTOKYO INST TECH·Filed 2015·Granted Oct 16, 2018·0 cites·14 claims
- 0945US11888396B2Chopper circuitTOKYO INST TECH·Filed 2019·Granted Jan 30, 2024·0 cites·10 claims
- 1044US2019248406A1Assembly structure of sensor, electric motor, and electric power steering deviceNSK LTD·Filed 2017·Application pending·0 cites
- 1143US5404978AViscous couplingGKN VISCODRIVE GMBH·Filed 1993·Granted Apr 11, 1995·8 cites·6 claims
- 1239US5145470APower delivering apparatusVISCODRIVE JAPAN·Filed 1991·Granted Sep 8, 1992·9 cites·3 claims
- 1336US5161658AViscous couplingVISCODRIVE JAPAN·Filed 1991·Granted Nov 10, 1992·5 cites·5 claims
- 1432US5791446AViscous coupling having a toothed hub used as a carrier for the innerGKN VISCODRIVE GMBH·Filed 1997·Granted Aug 11, 1998·3 cites·6 claims
- 1529US5662196AViscous coupling having a toothed hub used as carrier for the inner platesGKN VISCODRIVE GMBH·Filed 1995·Granted Sep 2, 1997·1 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →