Assignee
HONSHU CHEMICAL IND
JP·52 granted patents·27 pending applications·131 citations·filing 1990–2023
Top patents by PatentIndex Score
79 records- 0184US7456323B21,3-bis(3-formyl-4-hydroxyphenyl)adamantanes and polynuclear polyphenols derived therefromHONSHU CHEMICAL IND·Filed 2006·Granted Nov 25, 2008·5 cites·5 claims
- 0279US11884864B2Method for producing liquid-crystal polyester processed productHONSHU CHEMICAL IND·Filed 2020·Granted Jan 30, 2024·2 cites·7 claims
- 0378US11118009B2Aromatic polycarbonate oligomer solidHONSHU CHEMICAL IND·Filed 2018·Granted Sep 14, 2021·1 cites·2 claims
- 0478US7586009B2Bis-(hydroxybenzaldehyde) compound and novel polynuclear polyphenol compound derived therefrom and method for production thereofHONSHU CHEMICAL IND·Filed 2006·Granted Sep 8, 2009·3 cites·17 claims
- 0575US6673975B1Method for producing 1,1-bis-(4-hydroxyphenyl)-3,3,5-trimethylcyclohexaneHONSHU CHEMICAL IND·Filed 2000·Granted Jan 6, 2004·9 cites·4 claims
- 0674US12421452B2Method for producing liquid-crystal polyester processed productHONSHU CHEMICAL IND·Filed 2023·Granted Sep 23, 2025·0 cites·4 claims
- 0773US6872858B2Diphenol and process for producing the sameHONSHU CHEMICAL IND·Filed 2002·Granted Mar 29, 2005·10 cites·5 claims
- 0871US6603029B1Partially protected novel trisphenols and process for production thereofHONSHU CHEMICAL IND·Filed 2000·Granted Aug 5, 2003·7 cites·7 claims
- 0970US6720460B2Hydroxyphenyl adamantanes and process for the production of the sameHONSHU CHEMICAL IND·Filed 2003·Granted Apr 13, 2004·6 cites·5 claims
- 1070US2025019342A1Method for producing polyether nitrileHONSHU CHEMICAL IND·Filed 2022·Application pending·0 cites
- 1170US2025011540A1Method for producing polyether nitrileHONSHU CHEMICAL IND·Filed 2022·Application pending·0 cites
- 1269US5099076AMethod for preparing p,p'-biphenolHONSHU CHEMICAL IND·Filed 1990·Granted Mar 24, 1992·13 cites·5 claims
- 1368US6326522B1Process for production of 1,3-di(2-p-hydroxyphenyl-2-propyl)benzeneHONSHU CHEMICAL IND·Filed 2000·Granted Dec 4, 2001·7 cites·5 claims
- 1465US10759755B2Bisphenol compound and aromatic polycarbonateHONSHU CHEMICAL IND·Filed 2016·Granted Sep 1, 2020·1 cites·3 claims
- 1565US2025026886A1Method for producing polyether nitrileHONSHU CHEMICAL IND·Filed 2022·Application pending·0 cites
- 1664US6512149B2Method for removing butyl groups from butyl phenol compoundsHONSHU CHEMICAL IND·Filed 2001·Granted Jan 28, 2003·4 cites·15 claims
- 1764US2025002683A1Curable resin composition, varnish, prepreg, and cured productHONSHU CHEMICAL IND·Filed 2022·Application pending·0 cites
- 1864US2025206880A1Polyether nitrile molding material, method for producing the same, and method for producing polyether nitrile resin composition molding materialHONSHU CHEMICAL IND·Filed 2023·Application pending·0 cites
- 1963US2025223402A1Method for producing polyether nitrile molding material and method for producing polyether nitrile resin composition molding materialHONSHU CHEMICAL IND·Filed 2023·Application pending·0 cites
- 2063US2025011336A1Crystal of isomannide-bis(trimellitate anhydride) and method for producing the sameHONSHU CHEMICAL IND·Filed 2022·Application pending·0 cites
- 2163US2025296904A1Crystal of 4,4'-bis(1,1-bis(4-hydroxy-3-methylphenyl)ethyl)biphenyl and method for producing the sameHONSHU CHEMICAL IND·Filed 2023·Application pending·0 cites
- 2262US6673974B1Process for production of 1,1-bis(4-hydroxyphenyl)-3,3,5-trimethylcyclohexaneHONSHU CHEMICAL IND·Filed 2000·Granted Jan 6, 2004·3 cites·3 claims
- 2361US2024327572A1Curable resin composition, varnish, prepreg, and cured productHONSHU CHEMICAL IND·Filed 2022·Application pending·0 cites
- 2460US2026055236A1Polyether nitrile with improved crystallization speed and method for producing the same, and polyether nitrile resin composition and method for producing the sameHONSHU CHEMICAL IND·Filed 2023·Application pending·0 cites
- 2559US9522868B2Tetrakis(ether-substituted formylphenyl)HONSHU CHEMICAL IND·Filed 2015·Granted Dec 20, 2016·0 cites·1 claims
- 2659US2024301139A1Material for melt processing and melt-processed productHONSHU CHEMICAL IND·Filed 2022·Application pending·0 cites
- 2759US2024376267A1Polyimide resin material for colorless transparent processed product and novel polyimideHONSHU CHEMICAL IND·Filed 2022·Application pending·0 cites
- 2858US11130841B2Aromatic polycarbonate oligomer solidHONSHU CHEMICAL IND·Filed 2018·Granted Sep 28, 2021·0 cites·2 claims
- 2958US10654971B2Aromatic polycarbonate oligomer solidHONSHU CHEMICAL IND·Filed 2016·Granted May 19, 2020·0 cites·2 claims
- 3058US10655010B2Aromatic polycarbonate oligomer solidHONSHU CHEMICAL IND·Filed 2016·Granted May 19, 2020·0 cites·2 claims
- 3158US2011172457A1Tetrakis(ether-substituted formylphenyl) and new polynuclear polyphenol derived from the sameHONSHU CHEMICAL IND·Filed 2009·Application pending·0 cites
- 3257US6673973B1Method of producing 1,1-bis-(4-hydroxyphenyl)-3,3,5-trimethylcyclohexaneHONSHU CHEMICAL IND·Filed 2000·Granted Jan 6, 2004·2 cites·1 claims
- 3357US2025178246A1Polyether nitrile molding material, method for producing the same, and method for producing polyether nitrile resin composition molding materialHONSHU CHEMICAL IND·Filed 2022·Application pending·0 cites
- 3457US2011028752A1Novel bis(formylphenyl) compound and novel polynuclear polyphenol compound derived from the sameHONSHU CHEMICAL IND·Filed 2008·Application pending·0 cites
- 3556US7750190B2Method for producing new polynuclear poly(formylphenol)HONSHU CHEMICAL IND·Filed 2007·Granted Jul 6, 2010·0 cites·7 claims
- 3655US12479784B2Trisphenol derivativeHONSHU CHEMICAL IND·Filed 2021·Granted Nov 25, 2025·0 cites·3 claims
- 3755US6492542B2Method for producing carboxylic acid tertiary alkyl esterHONSHU CHEMICAL IND·Filed 2001·Granted Dec 10, 2002·2 cites·4 claims
- 3855US5847237ACatalyst for ortho-alkylation of phenols, a precursor thereof, and production of ortho-alkylated phenols by use of said catalystHONSHU CHEMICAL IND·Filed 1996·Granted Dec 8, 1998·19 cites·12 claims
- 3954US10662286B2Aromatic polycarbonate oligomer solidHONSHU CHEMICAL IND·Filed 2016·Granted May 26, 2020·0 cites·2 claims
- 4054US5763560AMethod of producing styrene derivativesHONSHU CHEMICAL IND·Filed 1996·Granted Jun 9, 1998·7 cites·14 claims
- 4154US2025034163A1Crystal of isosorbide-bis(trimellitate anhydride) and method for producing the sameHONSHU CHEMICAL IND·Filed 2022·Application pending·0 cites
- 4253US12398088B2Method for producing aromatic bis ether compoundHONSHU CHEMICAL IND·Filed 2020·Granted Aug 26, 2025·0 cites·1 claims
- 4353US9567281B24-acylaralkylphenols and derivatives thereofHONSHU CHEMICAL IND·Filed 2014·Granted Feb 14, 2017·0 cites·1 claims
- 4452US11932598B2Polyacyloxymethyl-4,4′-acyloxybiphenyl compoundHONSHU CHEMICAL IND·Filed 2019·Granted Mar 19, 2024·0 cites·1 claims
- 4552US6906226B2Hydroxymethyl-substituted polyfunctional phenolsHONSHU CHEMICAL IND·Filed 2003·Granted Jun 14, 2005·2 cites·4 claims
- 4651US11208378B2Alkoxymethyl-substituted bisphenol compoundHONSHU CHEMICAL IND·Filed 2018·Granted Dec 28, 2021·0 cites·1 claims
- 4750US11964939B2Aromatic tetracarboxylic acid compoundHONSHU CHEMICAL IND·Filed 2019·Granted Apr 23, 2024·0 cites·2 claims
- 4850US6284931B1Process for producing 3, 3, 5-trimethylcyclohexylidenebisphenolHONSHU CHEMICAL IND·Filed 1999·Granted Sep 4, 2001·11 cites·8 claims
- 4950US2025051509A1Curable resin composition, varnish, cured product, and method for producing cured productHONSHU CHEMICAL IND·Filed 2022·Application pending·0 cites
- 5049US7875743B2Bis(formylphenyl)alkane and novel polynuclear phenol derived from the sameHONSHU CHEMICAL IND·Filed 2007·Granted Jan 25, 2011·0 cites·5 claims
Showing the top 50 of 79 patent records by PatentIndex Score.
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