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Inventor

HAGIWARA MAKOTO

JP14 patents
⚠️ This page may combine multiple inventors who share the name “HAGIWARA MAKOTO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

VISCODRIVE JAPAN

4 patents
US5616096AApr 1, 1997

Differential gear unit

VISCODRIVE JAPAN22 citations91
US5145470ASep 8, 1992

Power delivering apparatus

VISCODRIVE JAPAN9 citations72
US5080210AJan 14, 1992

Viscous coupling

VISCODRIVE JAPAN19 citations72
US5161658ANov 10, 1992

Viscous coupling

VISCODRIVE JAPAN5 citations61

TOKYO INST TECH

4 patents
US10498233B2Dec 3, 2019

Bidirectional chopper circuit

TOKYO INST TECH2 citations72
US9496805B2Nov 15, 2016

Single-phase power converter, three-phase two-phase power converter, and three-phase power converter

TOKYO INST TECH3 citations72
US11888396B2Jan 30, 2024

Chopper circuit

TOKYO INST TECH0 citations51
US10103645B2Oct 16, 2018

Power converter

TOKYO INST TECH0 citations51

GKN VISCODRIVE GMBH

3 patents
US5404978AApr 11, 1995

Viscous coupling

GKN VISCODRIVE GMBH8 citations73
US5791446AAug 11, 1998

Viscous coupling having a toothed hub used as a carrier for the inner

GKN VISCODRIVE GMBH3 citations61
US5662196ASep 2, 1997

Viscous coupling having a toothed hub used as carrier for the inner plates

GKN VISCODRIVE GMBH1 citations50

TOCHIGI FUJI SANGYO KK

2 patents
US4805486AFeb 21, 1989

Locking differential gear assembly

TOCHIGI FUJI SANGYO KK177 citations98
US4735108AApr 5, 1988

Power transmission device

TOCHIGI FUJI SANGYO KK29 citations92

AKAGI HIROFUMI

1 patent
US9379632B2Jun 28, 2016

Power converter and method for controlling same

AKAGI HIROFUMI6 citations67