Inventor · disambiguated record
Keitaro Yonezawa
Also filed as: YONEZAWA KEITARO
101 granted patents·6 pending applications·1,823 citations·filing 1975–2020
99Inventor score
Top patents by PatentIndex Score
107 records- 0198US6527266B1Clamping apparatus with datum functionKOSMEK KK·Filed 2000·Granted Mar 4, 2003·85 cites·7 claims
- 0297US4557371AWork-clamp pallet for machine toolAIOI SEIKI KK·Filed 1982·Granted Dec 10, 1985·72 cites·20 claims
- 0394US6095509AClamping apparatusKOSMEK KK·Filed 1998·Granted Aug 1, 2000·89 cites·20 claims
- 0493US4597709ATransferring device for dies and the likeAIOI SEIKI KK·Filed 1983·Granted Jul 1, 1986·54 cites·4 claims
- 0593US4449907ADies exchanging device for a machine using diesAIOI SEIKI KK·Filed 1983·Granted May 22, 1984·66 cites·7 claims
- 0692US4583631AApparatus for positioning and clamping work clamp pallet for machine toolsAIOI KEIKI K K·Filed 1985·Granted Apr 22, 1986·73 cites·9 claims
- 0789US4042311APump fluid motor carrying spool valve for distributor valve actuationAIOI SEIKI KK·Filed 1976·Granted Aug 16, 1977·46 cites·7 claims
- 0888US6024354AClamping apparatusKOSMEK KK·Filed 1998·Granted Feb 15, 2000·51 cites·12 claims
- 0988US4210168APressure-responsive valve unit for a fluid containerNERIKI KK·Filed 1978·Granted Jul 1, 1980·43 cites·9 claims
- 1086US5018617AWorkpiece pallet changer for machine toolsAIOI SEIKI KK·Filed 1990·Granted May 28, 1991·56 cites·13 claims
- 1184US4909493ACylinder type hydraulic clampKOSMEK KK·Filed 1988·Granted Mar 20, 1990·39 cites·8 claims
- 1283US5063648AApparatus and method for replacing working-object of processing machineKOSMEK KK·Filed 1989·Granted Nov 12, 1991·28 cites·6 claims
- 1383US4317358ADie lifter unit for pressing or punching machineYONEZAWA KEITARO·Filed 1980·Granted Mar 2, 1982·24 cites·10 claims
- 1482US6663093B2Rotary clampKOSMEK KK·Filed 2002·Granted Dec 16, 2003·21 cites·17 claims
- 1582US6113086ARotary clamping apparatusKOSMEK KK·Filed 1997·Granted Sep 5, 2000·40 cites·6 claims
- 1681US4301673ADie lifter unitYONEZAWA KEITARO·Filed 1979·Granted Nov 24, 1981·33 cites·12 claims
- 1780US4085669AOverload protector for mechanical pressAIOI SEIKI KK·Filed 1976·Granted Apr 25, 1978·20 cites·4 claims
- 1880US3981328AHand-operable takeout valve for a fluid pressurized containerNERIKI KK·Filed 1975·Granted Sep 21, 1976·30 cites·28 claims
- 1978US7758031B2Positioning apparatus and clamping system having the sameKOSMEK LTD·Filed 2008·Granted Jul 20, 2010·5 cites·13 claims
- 2078US7618030B2Screw engagement type clamp device, clamping system, and fluid pressure actuatorKOSMEK LTD·Filed 2006·Granted Nov 17, 2009·11 cites·20 claims
- 2178US4504046ARetracting clampYONEZAWA KEITARO·Filed 1983·Granted Mar 12, 1985·37 cites·6 claims
- 2277US7168695B2Positioning deviceKOSMEK LTD·Filed 2003·Granted Jan 30, 2007·14 cites·24 claims
- 2376US7303186B2Aligning drive mechanism and positioning apparatus having this mechanismKOSMEK LTD·Filed 2003·Granted Dec 4, 2007·19 cites·22 claims
- 2476US5979267AClamping deviceKOSMEK KK·Filed 1997·Granted Nov 9, 1999·33 cites·14 claims
- 2576US5738145AValve assembly for gas cylinderNERIKI KK·Filed 1997·Granted Apr 14, 1998·42 cites·12 claims
- 2675US10018191B2Cylinder apparatusKOSMEK LTD·Filed 2013·Granted Jul 10, 2018·3 cites·16 claims
- 2774US5876025ACylinder apparatusKOSMEK KK·Filed 1997·Granted Mar 2, 1999·22 cites·5 claims
- 2873US5065610AClamping apparatus for press brakeKOSMEK KK·Filed 1991·Granted Nov 19, 1991·21 cites·6 claims
- 2972US9833866B2Clamp deviceKOSMEK LTD·Filed 2013·Granted Dec 5, 2017·2 cites·6 claims
- 3072US7165763B2Positioning deviceKOSMEK LTD·Filed 2003·Granted Jan 23, 2007·11 cites·8 claims
- 3171US5927700ATransmission device for a clampKOSMEK KK·Filed 1998·Granted Jul 27, 1999·23 cites·10 claims
- 3271US5108079AHydraulic clamp with direct operated rotary clamping-memberKOSMEK KK·Filed 1990·Granted Apr 28, 1992·19 cites·5 claims
- 3370US6047727AValve assembly for gas cylinder and pressure reducing valve used thereforNERIKI KK·Filed 1998·Granted Apr 11, 2000·31 cites·3 claims
- 3470US4971107AQuick-acting couplingKOSMEK KK·Filed 1989·Granted Nov 20, 1990·22 cites·6 claims
- 3569US5096347ASpring clamp with clamped condition holding deviceMORI SEIKO CO LTD·Filed 1991·Granted Mar 17, 1992·38 cites·15 claims
- 3668US6394437B1Clamping apparatusKOSMEK KK·Filed 2001·Granted May 28, 2002·9 cites·13 claims
- 3768US4823687ADie-height adjusting device of mechanical pressKOSMEK AND AMADA COMPANY LIMIT·Filed 1987·Granted Apr 25, 1989·19 cites·12 claims
- 3867US7175169B2Spring-lock type clamp deviceKOSMEK LTD·Filed 2003·Granted Feb 13, 2007·11 cites·4 claims
- 3967US5887862AWork supportKOSMEK KK·Filed 1997·Granted Mar 30, 1999·19 cites·9 claims
- 4067US4506871ARetracting clampAIOI SEIKI KK·Filed 1983·Granted Mar 26, 1985·20 cites·8 claims
- 4165US5125234AHydraulic cylinder apparatus of the type actuated by boosterKOSMEK KK·Filed 1991·Granted Jun 30, 1992·20 cites·9 claims
- 4265US4948105AHydraulic clampKOSMEK KK·Filed 1988·Granted Aug 14, 1990·20 cites·10 claims
- 4364US4989630AQuick-acting couplingKOSMEK KK·Filed 1990·Granted Feb 5, 1991·20 cites·2 claims
- 4463US7325798B2Clamping device and clamping system using the sameKOSMEK LTD·Filed 2004·Granted Feb 5, 2008·7 cites·25 claims
- 4563US4928919AStop valveNERIKI KK·Filed 1989·Granted May 29, 1990·23 cites·9 claims
- 4662US9458865B2Cylinder device with force multiplierYOKOTA HIDEAKI·Filed 2012·Granted Oct 4, 2016·2 cites·11 claims
- 4762US8302947B2Clamping apparatusYONEZAWA KEITARO·Filed 2008·Granted Nov 6, 2012·2 cites·9 claims
- 4862US6457406B1Overload protector for mechanical pressKOSMEK KK·Filed 2000·Granted Oct 1, 2002·5 cites·11 claims
- 4962US5620024ARelief valve operation detectorKOSMEK KK·Filed 1995·Granted Apr 15, 1997·16 cites·8 claims
- 5061US9573232B2Actuator and clamp device using sameYOKOTA HIDEAKI·Filed 2012·Granted Feb 21, 2017·2 cites·7 claims
Showing the top 50 of 107 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →