Inventor · disambiguated record
Tsunekazu Udagawa
Also filed as: UDAGAWA TSUNEKAZU
99 granted patents·6 pending applications·2,160 citations·filing 1986–2006
99Inventor score
Top patents by PatentIndex Score
105 records- 0198US5853175ACylinder head gasket with fluid flow pathISHIKAWA GASKET·Filed 1996·Granted Dec 29, 1998·73 cites·12 claims
- 0298US4834399ASteel laminate gasketISHIKAWA GASKET·Filed 1988·Granted May 30, 1989·103 cites·25 claims
- 0397US4898396ASteel laminate gasketISHIKAWA GASKET·Filed 1988·Granted Feb 6, 1990·60 cites·12 claims
- 0494US6517085B2Cylinder head gasket with partial resin coatingISHIKAWA GASKET·Filed 2001·Granted Feb 11, 2003·34 cites·7 claims
- 0594US6250645B1Gasket with annular sealing projection and grooveISHIKAWA GASKET·Filed 2000·Granted Jun 26, 2001·42 cites·6 claims
- 0692US4778189AGasket with elastic sealing membersISHIKAWA GASKET·Filed 1987·Granted Oct 18, 1988·49 cites·2 claims
- 0790US6089573AMetal gasket with corrugated beadISHIKAWA GASKET·Filed 1998·Granted Jul 18, 2000·42 cites·7 claims
- 0889US4759585ASteel laminate gasket with meshing corrugated beadsISHIKAWA GASKET·Filed 1987·Granted Jul 26, 1988·50 cites·14 claims
- 0987US4759556AMetal gasket with auxiliary beadISHIKAWA GASKET·Filed 1987·Granted Jul 26, 1988·45 cites·6 claims
- 1086US4896891ASteel laminate gasket with associated beadsISHIKAWA GASKET·Filed 1988·Granted Jan 30, 1990·42 cites·11 claims
- 1185US5058908ASteel laminate gasketISHIKAWA GASKET·Filed 1990·Granted Oct 22, 1991·38 cites·18 claims
- 1285US4714260ASteel laminate gasketISHIKAWA GASKET·Filed 1987·Granted Dec 22, 1987·43 cites·8 claims
- 1384US6036195AMetal gasket with double beadsISHIKAWA GASKET·Filed 1998·Granted Mar 14, 2000·46 cites·15 claims
- 1481US5150910AGasket with soft and hard seal coatingsISHIKAWA GASKET·Filed 1990·Granted Sep 29, 1992·45 cites·8 claims
- 1581US4807892ASteel laminate gasket with high sealing abilityISHIKAWA GASKIT CO LTD·Filed 1988·Granted Feb 28, 1989·39 cites·9 claims
- 1680US6779800B2Head gasketISHIKAWA GASKET·Filed 2002·Granted Aug 24, 2004·20 cites·8 claims
- 1779US5478092AMetal laminate gasket with edge support beadsISHIKAWA GASKET·Filed 1995·Granted Dec 26, 1995·28 cites·4 claims
- 1879US5255926ASteel laminate gasketISHIKAWA GASKET·Filed 1992·Granted Oct 26, 1993·37 cites·7 claims
- 1979US5232229AMetal gasket with low heat transmissionISHIKAWA GASKET·Filed 1991·Granted Aug 3, 1993·36 cites·5 claims
- 2079US4828275AGasket with elastic sealing membersISHIKAWA GASKET·Filed 1988·Granted May 9, 1989·29 cites·9 claims
- 2179US4754982ASteel laminate gasketISHIKAWA GASKET·Filed 1986·Granted Jul 5, 1988·35 cites·9 claims
- 2278US7367566B2Metal gasketISHIKAWA GASKET·Filed 2005·Granted May 6, 2008·7 cites·11 claims
- 2377US4995624ASteel laminate gasket with wide sealing areaISHIKAWA GASKET·Filed 1989·Granted Feb 26, 1991·30 cites·9 claims
- 2476US5427389AMetal laminate gasket with edge support beadsISHIKAWA GASKET·Filed 1993·Granted Jun 27, 1995·39 cites·7 claims
- 2575US7311309B2Cylinder head gasketISHIKAWA GASKET·Filed 2005·Granted Dec 25, 2007·6 cites·4 claims
- 2675US4998741AMetal plate with reinforcing bead and a cylinder head gasket including the sameISHIKAWA GASKET·Filed 1989·Granted Mar 12, 1991·30 cites·8 claims
- 2775US4861046ASteel laminate gasket with separate beadsISHIKAWA GASKET·Filed 1988·Granted Aug 29, 1989·31 cites·12 claims
- 2873US4867462ASteel laminate gasket with separate beadsISHIKAWA GASKET·Filed 1989·Granted Sep 19, 1989·28 cites·8 claims
- 2973US4803965ASteel laminate type cylinder head gasketISHIKAWA GASKET·Filed 1987·Granted Feb 14, 1989·28 cites·8 claims
- 3072US6186513B1Method of forming gasket with annular sealing projection and grooveISHIKAWA GASKET·Filed 1998·Granted Feb 13, 2001·27 cites·9 claims
- 3172US5221097ASealing system using metal gasket with projection beadISHIKAWA GASKET·Filed 1991·Granted Jun 22, 1993·33 cites·8 claims
- 3272US4938488ASteel laminate gasket with wide sealing areaISHIKAWA GASKET·Filed 1988·Granted Jul 3, 1990·28 cites·14 claims
- 3371US5536024AMetal gasket having sealing beads with different width and heightISHIKAWA GASKET·Filed 1994·Granted Jul 16, 1996·29 cites·5 claims
- 3470US7014194B2Cylinder head gasketISHIKAWA GASKET·Filed 2005·Granted Mar 21, 2006·4 cites·9 claims
- 3570US5076595ASteel laminate gasketISHIKAWA GASKET·Filed 1989·Granted Dec 31, 1991·19 cites·7 claims
- 3669US5306024AMetal gasket with low heat transmissionISHIKAWA GASKET·Filed 1993·Granted Apr 26, 1994·25 cites·7 claims
- 3768US6318733B1Metal laminate gasket with elastic auxiliary sealing memberISHIKAWA GASKET·Filed 1997·Granted Nov 20, 2001·19 cites·1 claims
- 3867US5240261ASteel laminate gasketISHIKAWA GASKET·Filed 1991·Granted Aug 31, 1993·24 cites·7 claims
- 3967US4826708AMethod of manufacturing a steel plate with a seal coating for a steel laminate gasketISHIKAWA GASKET·Filed 1987·Granted May 2, 1989·23 cites·14 claims
- 4067US4776073AMethod of manufacturing a steel laminate gasketISHIKAWA GASKET·Filed 1987·Granted Oct 11, 1988·23 cites·8 claims
- 4166US5435575ASteel laminate gasketISHIKAWA GASKET·Filed 1991·Granted Jul 25, 1995·24 cites·6 claims
- 4265US5054795AMetal laminate gasketISHIKAWA GASKET·Filed 1988·Granted Oct 8, 1991·22 cites·6 claims
- 4365US4869516ASteel laminate gasketsISHIKAWA GASKET·Filed 1987·Granted Sep 26, 1989·23 cites·7 claims
- 4465US4767124AGasket for an internal combustion engineISHIKAWA GASKET·Filed 1987·Granted Aug 30, 1988·20 cites·14 claims
- 4564US5570892AMetal gasket with a bead having pressure adjusting portionISHIKAWA GASKET·Filed 1995·Granted Nov 5, 1996·26 cites·9 claims
- 4664US5092613ASteel laminate gasketISHIKAWA GASKET·Filed 1990·Granted Mar 3, 1992·25 cites·10 claims
- 4763US7207572B2GasketISHIKAWA GASKET·Filed 2005·Granted Apr 24, 2007·1 cites·10 claims
- 4863US5169163ASteel laminate gasket with main and auxiliary sealing membersISHIKAWA GASKET·Filed 1991·Granted Dec 8, 1992·25 cites·12 claims
- 4962US5769430AMetal gasket with bead and thermal sprayed layer thereofISHIKAWA GASKET·Filed 1996·Granted Jun 23, 1998·23 cites·9 claims
- 5061US7108268B2Metal laminate gasketISHIKAWA GASKET·Filed 2004·Granted Sep 19, 2006·8 cites·5 claims
Showing the top 50 of 105 patent records by PatentIndex Score.
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