Inventor · disambiguated record
Fumio Oi
Also filed as: OI FUMIO
14 granted patents·1 pending application·152 citations·filing 1987–2005
91Inventor score
Top patents by PatentIndex Score
15 records- 0192US4812551ANovolak resin for positive photoresistSUMITOMO CHEMICAL CO·Filed 1987·Granted Mar 14, 1989·56 cites·5 claims
- 0267US5059507APositive resist composition containing quinone diazide sulfonic acid ester of a phenol compound and an alkali soluble resinSUMITOMO CHEMICAL CO·Filed 1989·Granted Oct 22, 1991·18 cites·20 claims
- 0362US5456995ARadiation-sensitive positive resist compositionSUMITOMO CHEMICAL CO·Filed 1994·Granted Oct 10, 1995·14 cites·8 claims
- 0459US5080997AProcess for preparing a positive resist composition by mixing the condensation product of a quinone diazide sulfonyl halogenide and a phenol with a resin solution without isolating the condensation product from the crude mixtureSUMITOMO CHEMICAL CO·Filed 1989·Granted Jan 14, 1992·13 cites·22 claims
- 0556US5456996ARadiation-sensitive positive resist compositionSUMITOMO CHEMICAL CO·Filed 1994·Granted Oct 10, 1995·12 cites·7 claims
- 0654US5290656AResist composition, novel phenol compound and quinone diazide sulfonic acid ester of novel phenol compoundSUMITOMO CHEMICAL CO·Filed 1993·Granted Mar 1, 1994·12 cites·10 claims
- 0753US7456321B2Process for producing high-purity 4,4′-dihydroxydiphenyl sulfoneKONISHI CHEM IND·Filed 2003·Granted Nov 25, 2008·1 cites·13 claims
- 0852US5378586AResist composition comprising a quinone diazide sulfonic diester and a quinone diazide sulfonic complete esterSUMITOMO CHEMICAL CO·Filed 1993·Granted Jan 3, 1995·11 cites·14 claims
- 0948US5124228APositive photoresist composition containing alkali-soluble resin and o-quinone diazide sulfonic acid esterSUMITOMO CHEMICAL CO·Filed 1989·Granted Jun 23, 1992·8 cites·15 claims
- 1045US5861229ARadiation-sensitive positive resist composition comprising a 1,2-quinone diazide compound, an alkali-soluble resin and a polyphenol compoundSUMITOMO CHEMICAL CO·Filed 1992·Granted Jan 19, 1999·7 cites·3 claims
- 1143US6861562B2Process for producing mixture of dihydroxydiphenylsulfone isomersKONISHI CHEM IND·Filed 2002·Granted Mar 1, 2005·0 cites·7 claims
- 1242US6965054B2Process for producing mixture of dihydroxydiphenylsulfone isomersKONISHI CHEM IND·Filed 2002·Granted Nov 15, 2005·0 cites·7 claims
- 1341US6974886B2Process for producing dihydroxydiphenylsulfoneKONISHI CHEM IND·Filed 2003·Granted Dec 13, 2005·0 cites·19 claims
- 1439US2005272603A1Color developer and thermal recording material containing the sameOI FUMIO·Filed 2003·Application pending·0 cites
- 1537US8088863B2Organic-solvent dispersion of fine polysilsesquioxane particle, process for producing the same, aqueous dispersion of fine polysilsesquioxane particle, and process for producing the sameMA CHENGHUAN·Filed 2005·Granted Jan 3, 2012·0 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →