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
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →