Inventor · disambiguated record
Masahiko Umekawa
Also filed as: UMEKAWA MASAHIKO
6 granted patents·186 citations·filing 1991–2011
84Inventor score
Top patents by PatentIndex Score
6 records- 0184US5033972AElectrical connectorHOSIDEN CORP·Filed 1991·Granted Jul 23, 1991·97 cites·7 claims
- 0283US7832286B2Torque wrenchKYOTO TOOL CO LTD·Filed 2006·Granted Nov 16, 2010·22 cites·14 claims
- 0380US5139435AMultipolar electrical connectorHOSIDEN CORP·Filed 1991·Granted Aug 18, 1992·48 cites·13 claims
- 0474US8234936B2Torque wrench having improved tightening torque measurement valueNAKATA SHOGO·Filed 2008·Granted Aug 7, 2012·14 cites·6 claims
- 0566US8387437B2Weight applying unit for calibration and weight applying method for calibrationYAMAZAKI HITOSHI·Filed 2008·Granted Mar 5, 2013·5 cites·17 claims
- 0649US8887547B2Weight applying unit for calibration and weight applying method for calibrationYAMAZAKI HITOSHI·Filed 2011·Granted Nov 18, 2014·0 cites·22 claims
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