Inventor · disambiguated record
Naoya Ichikawa
Also filed as: ICHIKAWA NAOYA
37 granted patents·5 pending applications·473 citations·filing 1994–2016
98Inventor score
Top patents by PatentIndex Score
42 records- 0198US8658730B2Rubber composition for tire, and pneumatic tireSUMITOMO RUBBER IND·Filed 2013·Granted Feb 25, 2014·21 cites·6 claims
- 0298US8022136B2Vulcanized rubber composition, pneumatic tire and the process of producing the sameSUMITOMO RUBBER IND·Filed 2008·Granted Sep 20, 2011·45 cites·17 claims
- 0397US7371791B2Rubber composition and pneumatic tire using the sameSUMITOMO RUBBER IND·Filed 2006·Granted May 13, 2008·35 cites·9 claims
- 0495US9481783B2Rubber composition for tires and pneumatic tireISOBE YUKIO·Filed 2012·Granted Nov 1, 2016·13 cites·14 claims
- 0595US8857482B2Rubber composition for tread, method for producing the same, and heavy-load tireTAGUCHI TAKAFUMI·Filed 2012·Granted Oct 14, 2014·17 cites·1 claims
- 0695US8813798B2Rubber composition for tire, and pneumatic tireSUMITOMO RUBBER IND·Filed 2014·Granted Aug 26, 2014·17 cites·1 claims
- 0794US8875765B2Rubber composition for clinch apex and pneumatic tireTSUMORI ISAMU·Filed 2012·Granted Nov 4, 2014·17 cites·6 claims
- 0893US9410033B2Rubber composition for undertread, and pneumatic tireSUMITOMO RUBBER IND·Filed 2014·Granted Aug 9, 2016·11 cites·2 claims
- 0993US8044118B2Preparation process of oil extended rubber for tire, oil extended rubber for tire, and rubber composition and tire using the sameSUMITOMO RUBBER IND·Filed 2007·Granted Oct 25, 2011·28 cites·8 claims
- 1092US8100157B2Rubber composition for tire and pneumatic tire using the sameHATTORI TAKAYUKI·Filed 2006·Granted Jan 24, 2012·30 cites·9 claims
- 1191US8633275B2Rubber composition for breaker and pneumatic tireSAKAKI TOSHIAKI·Filed 2011·Granted Jan 21, 2014·9 cites·5 claims
- 1291US6462159B1Cationic deproteinized natural rubber latex, method of preparing the same, and treating agent used in the methodSUMITOMO RUBBER IND·Filed 2000·Granted Oct 8, 2002·32 cites·6 claims
- 1390US9181355B2Modified natural rubber, method for producing same, rubber composition, and pneumatic tireICHIKAWA NAOYA·Filed 2011·Granted Nov 10, 2015·11 cites·16 claims
- 1489US8809450B2Modified natural rubber, production method thereof, tire rubber composition, and pneumatic tireSAKAKI TOSHIAKI·Filed 2012·Granted Aug 19, 2014·7 cites·9 claims
- 1586US8658728B2Natural rubber and method for producing the same, rubber composition and pneumatic tire using the same, modified natural rubber and method for producing the same, and rubber composition for tread or for covering carcass cord and pneumatic tire using the sameICHIKAWA NAOYA·Filed 2009·Granted Feb 25, 2014·9 cites·38 claims
- 1686US8183309B2Puncture sealantICHIKAWA NAOYA·Filed 2010·Granted May 22, 2012·6 cites·16 claims
- 1785US8563628B2Preparation process of oil extended rubber for tire, oil extended rubber for tire, and rubber composition and tire using the sameSAKAKI TOSHIAKI·Filed 2011·Granted Oct 22, 2013·5 cites·8 claims
- 1884US9758707B2Puncture sealing agentSUMITOMO RUBBER IND·Filed 2013·Granted Sep 12, 2017·4 cites·13 claims
- 1983US6864305B2Puncture sealing agent for a tire, and process for producing the sameSUMITOMO RUBBER IND·Filed 2002·Granted Mar 8, 2005·21 cites·7 claims
- 2083US6512034B1Cationic graft-modified natural rubber latexSUMITOMO RUBBER IND·Filed 2000·Granted Jan 28, 2003·18 cites·6 claims
- 2182US5610212AMeans for mechanically stabilizing deproteinized natural rubber latexKAO CORP·Filed 1994·Granted Mar 11, 1997·33 cites·5 claims
- 2278US6265479B1Deproteinizing agent and method of preparing cationic deproteinized natural rubber latex using the sameSUMITOMO RUBBER IND·Filed 2000·Granted Jul 24, 2001·10 cites·5 claims
- 2372US7172650B2Deproteinized natural rubber latex, method of preparing the same, rubber product using the same, and proteolytic agent for deproteinized natural rubber latexKAO CORP·Filed 2005·Granted Feb 6, 2007·1 cites·7 claims
- 2470US9334427B2Puncture sealing agentSUMITOMO RUBBER IND·Filed 2013·Granted May 10, 2016·1 cites·10 claims
- 2568US5585459AProcess for producing raw rubberKAO CORP·Filed 1994·Granted Dec 17, 1996·17 cites·2 claims
- 2663US8242196B2Puncture sealantISHIDA TAKAAKI·Filed 2010·Granted Aug 14, 2012·1 cites·13 claims
- 2762US6239253B1Deproteinized natural rubber and process for producing the sameKAO CORP·Filed 1999·Granted May 29, 2001·12 cites·5 claims
- 2862US2009286900A1Modified natural rubber, method for producing modified natural rubber, rubber composition, and tireICHIKAWA NAOYA·Filed 2009·Application pending·0 cites
- 2960US6943212B2Deproteinized natural rubber latex, method of preparing the same, rubber product using the same, and proteolytic agent for deproteinized natural rubber latexKAO CORP·Filed 2002·Granted Sep 13, 2005·1 cites·8 claims
- 3060US2013331475A1Modified natural rubber, method for producing modified natural rubber, rubber composition, and tireSUMITOMO RUBBER IND·Filed 2013·Application pending·0 cites
- 3159US6204358B1Process for producing deproteinized natural rubber using protease and anionic surfactantKAO CORP·Filed 1999·Granted Mar 20, 2001·19 cites·5 claims
- 3257US7015264B2Deproteinizing agent, deproteinized natural rubber latex using the same, and method of producing rubber productSUMITOMO RUBBER IND LDT·Filed 2003·Granted Mar 21, 2006·2 cites·5 claims
- 3357US6335407B1Deproteinized natural rubber and process for producing the sameKAO CORP·Filed 1997·Granted Jan 1, 2002·11 cites·13 claims
- 3457US2013102722A1Rubber composition for tire, and pneumatic tireSUMITOMO RUBBER IND·Filed 2012·Application pending·0 cites
- 3556US2013123387A1Rubber composition for undertread, and pneumatic tireSUMITOMO RUBBER IND·Filed 2012·Application pending·0 cites
- 3652US9617442B2Puncture sealing agentSUMITOMO RUBBER IND·Filed 2013·Granted Apr 11, 2017·0 cites·2 claims
- 3752US6797783B1Modified natural rubberKAO CORP·Filed 1997·Granted Sep 28, 2004·9 cites·4 claims
- 3851US2001051675A1Deproteinizing agent, deproteinized natural rubber latex using the same, and method of producing rubber productFiled 2001·Application pending·0 cites
- 3950US8318839B2Puncture sealantISHIDA TAKAAKI·Filed 2011·Granted Nov 27, 2012·0 cites·7 claims
- 4048US6784281B2Low allergenic natural rubber and method of preparing low allergenic natural rubber latexSUMITOMO RUBBER IND·Filed 2001·Granted Aug 31, 2004·0 cites·13 claims
- 4147US9657313B2Isoprene oligomer, polyisoprene, processes for producing these materials, rubber composition, and pneumatic tireSUMITOMO RUBBER IND·Filed 2016·Granted May 23, 2017·0 cites·8 claims
- 4241US9371342B2Isoprene oligomer, polyisoprene, processes for producing these materials, rubber composition, and pneumatic tireMIYAGI YUKINO·Filed 2011·Granted Jun 21, 2016·0 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →