Inventor · disambiguated record
Yuichi Okawa
Also filed as: OKAWA YUICHI
23 granted patents·1 pending application·239 citations·filing 1992–2010
95Inventor score
Files withMITSUI TOATSU CHEMICALS11MITSUI CHEMICALS INC6SUNAGA TADAHIRO2OCHIAI TAKASHI1SHINETSU CHEMICAL CO1
Top patents by PatentIndex Score
24 records- 0187US6531568B1Polyimide containing crosslinkable group and process for producing the sameMITSUI CHEMICALS INC·Filed 1999·Granted Mar 11, 2003·45 cites·35 claims
- 0286US7081501B2Hydrogenated ring-opening metathesis polymer and process for producing the sameMITSUI CHEMICALS INC·Filed 2004·Granted Jul 25, 2006·26 cites·27 claims
- 0381US5470943APolyimideMITSUI TOATSU CHEMICALS·Filed 1994·Granted Nov 28, 1995·27 cites·18 claims
- 0480US5354839APolyimide and preparation process of sameMITSUI TOATSU CHEMICALS·Filed 1993·Granted Oct 11, 1994·23 cites·28 claims
- 0576US8143429B2Process for producing organic transition metal complex compound, metathesis catalyst produced by using the same, ring-opening metathesis polymer obtainable with the metathesis catalyst, and process for producing the polymerOCHIAI TAKASHI·Filed 2006·Granted Mar 27, 2012·4 cites·3 claims
- 0670US7345135B2Crosslinkable aromatic resin having protonic acid group, and ion conductive polymer membrane, binder and fuel cell using the resinMITSUI CHEMICALS INC·Filed 2004·Granted Mar 18, 2008·9 cites·34 claims
- 0770US6458912B1Crystalline polyimide for melt molding with satisfactory thermal stabilityMITSUI CHEMICALS INC·Filed 1999·Granted Oct 1, 2002·24 cites·16 claims
- 0869US5508377APolyimideMITSUI TOATSU CHEMICALS·Filed 1994·Granted Apr 16, 1996·13 cites·16 claims
- 0969US5480965AReadily soluble, amorphous polyimide, and preparation process of sameMITSUI TOATSU CHEMICALS·Filed 1994·Granted Jan 2, 1996·14 cites·32 claims
- 1064US7954984B2Interior lampSTANLEY ELECTRIC CO LTD·Filed 2008·Granted Jun 7, 2011·5 cites·15 claims
- 1158US5260388APolyimide and process for the preparation thereofMITSUI TOATSU CHEMICALS·Filed 1992·Granted Nov 9, 1993·9 cites·21 claims
- 1256US8216766B2Polymer, polymer preparation method, resist composition and patterning processWATANABE TAKERU·Filed 2009·Granted Jul 10, 2012·0 cites·14 claims
- 1356US7807331B2Hydrogenated ring-opening metathesis polymer, resist composition and patterning processSHINETSU CHEMICAL CO·Filed 2008·Granted Oct 5, 2010·0 cites·11 claims
- 1455US5321096APolyimide compositionMITSUI TOATSU CHEMICALS·Filed 1993·Granted Jun 14, 1994·13 cites·14 claims
- 1554US5821319ALiquid crystal polyamide-imide copolymerMITSUI CHEMICALS INC·Filed 1996·Granted Oct 13, 1998·11 cites·28 claims
- 1652US7794915B2Hydrogenated ring-opening metathesis polymer, resist composition comprising the same and patterning methodMITSUI CHEMICALS INC·Filed 2007·Granted Sep 14, 2010·0 cites·20 claims
- 1751US8211984B2Ring-opening metathesis polymer, hydrogenated product thereof, method for preparing the same, and use thereofSUNAGA TADAHIRO·Filed 2007·Granted Jul 3, 2012·0 cites·17 claims
- 1845US5276133AFavorably processable polyimide and process for preparing polyimideMITSUI TOATSU CHEMICALS·Filed 1992·Granted Jan 4, 1994·5 cites·4 claims
- 1942US5494996APolyimide resin compositionMITSUI TOATSU CHEMICALS·Filed 1994·Granted Feb 27, 1996·4 cites·18 claims
- 2040US5506291APolyimide resin composition having excellent fatigue resistance and injection molded article of sameMITSUI TOATSU CHEMICALS·Filed 1994·Granted Apr 9, 1996·3 cites·16 claims
- 2138US8450440B2Method for purifying polymer and polymerSUNAGA TADAHIRO·Filed 2010·Granted May 28, 2013·0 cites·13 claims
- 2238US2003064235A1Optical members made of polymide resinsFiled 2001·Application pending·0 cites
- 2337US5484880APolyimideMITSUI TOATSU CHEMICALS·Filed 1994·Granted Jan 16, 1996·4 cites·16 claims
- 2431US5354890AAromatic diamine intermediates useful in the preparation of polyimidesMITSUI TOATSU CHEMICALS·Filed 1993·Granted Oct 11, 1994·0 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →