Inventor · disambiguated record
Tadasu Yamakawa
Also filed as: YAMAKAWA TADASU
4 granted patents·43 citations·filing 1990–2007
74Inventor score
Top patents by PatentIndex Score
4 records- 0171US6059679AAuto tensionerKOYO SEIKO CO·Filed 1998·Granted May 9, 2000·25 cites·10 claims
- 0247US8292053B2One-way clutch and power transmission apparatusYAMAKAWA TADASU·Filed 2007·Granted Oct 23, 2012·1 cites·13 claims
- 0345US6196941B1Auto tensionerKOYO SEIKO CO·Filed 1998·Granted Mar 6, 2001·11 cites·11 claims
- 0424US5005541AHydraulic valve lifterOTAI TEKKO KABUSHIKI KAISHA AN·Filed 1990·Granted Apr 9, 1991·6 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →