Inventor · disambiguated record
Takumi Kagawa
Also filed as: KAGAWA TAKUMI
18 granted patents·47 citations·filing 1988–2019
90Inventor score
Top patents by PatentIndex Score
18 records- 0177US5777007ABrominated p-cumylphenol flame-retardants for resin compositionTOSOH CORP·Filed 1997·Granted Jul 7, 1998·21 cites·15 claims
- 0269US7381742B2Optically active polymaleimide derivatives and process for their productionTOSOH CORP·Filed 2007·Granted Jun 3, 2008·2 cites·6 claims
- 0363US6787657B2Optically active epoxypropionate derivative, intermediate thereof and processes for their productionTOSOH CORP·Filed 2001·Granted Sep 7, 2004·2 cites·11 claims
- 0461US6777526B2Optically active maleimide derivatives, optically active polymaleimide derivatives, production method thereof, separating agent using the same derivative, and method for separating optically active compounds using the same agentTOSOH CORP·Filed 2002·Granted Aug 17, 2004·2 cites·13 claims
- 0561US5994435AFlame retardant and flame retardant resin composition formulated with the sameTOSOH CORP·Filed 1997·Granted Nov 30, 1999·15 cites·24 claims
- 0659US11555024B2Aldehyde adduct of hexafluoropropylene oxide, method of manufacturing trifluoropyruvyl fluoride dimer and method of manufacturing perfluoro(2,4-dimethyl-2-fluoroformyl-1,3-dioxolane)TOSOH CORP·Filed 2019·Granted Jan 17, 2023·0 cites·9 claims
- 0759US7186750B2Optically active maleimide derivatives, optically active polymaleimide derivatives, process for their production, separating media comprising the optically active polymaleimide derivatives and method of separating optically active compounds using themTOSOH CORP·Filed 2004·Granted Mar 6, 2007·4 cites·4 claims
- 0856US7645889B2Optically active polymaleimide derivatives and process for their productionTOSOH CORP·Filed 2008·Granted Jan 12, 2010·0 cites·4 claims
- 0952US10087147B25-(trifluoromethyl)pyrimidine derivatives and method for producing sameTOSOH F TECH INC·Filed 2017·Granted Oct 2, 2018·0 cites·3 claims
- 1051US9656970B25-(trifluoromethyl)pyrimidine derivatives and method for producing sameTOSOH F-TECH INC·Filed 2015·Granted May 23, 2017·0 cites·7 claims
- 1151US6878835B2Catalyst for asymmetric epoxidation of enones and process for producing optically active epoxide employing itTOSOH CORP·Filed 2003·Granted Apr 12, 2005·0 cites·4 claims
- 1245US6680275B2Catalyst for asymmetric epoxidation of enones and process for producing optically active epoxide employing itTOSOH CORP·Filed 2001·Granted Jan 20, 2004·0 cites·2 claims
- 1341US8703969B2Trifluoromethylthiophenium derivative salt, method for producing the same, and method for producing trifluoromethyl-containing compounds using the sameSHIBATA NORIO·Filed 2010·Granted Apr 22, 2014·0 cites·9 claims
- 1439US7169944B2Optically active epoxy compounds and processes for their productionTOSOH CORP·Filed 2003·Granted Jan 30, 2007·0 cites·9 claims
- 1537US6921832B2Optically active fluorine-containing compounds and processes for their productionTOSOH CORP·Filed 2003·Granted Jul 26, 2005·0 cites·16 claims
- 1630US5068336AProcess for producing 2-(4'-hydroxphenoxy)-3-chloro-5-trifluoromethylpyridineTOSOH CORP·Filed 1990·Granted Nov 26, 1991·0 cites·7 claims
- 1727US5258521AProcess of producing optically active propionic acid ester derivativesTOSOH CORP·Filed 1990·Granted Nov 2, 1993·0 cites·1 claims
- 1827US4940802A4,4'-bis(phthalimido)diphenyl sulfone compounds, processes for their production and flame retardant polymer compositions containing themTOSOH CORP·Filed 1988·Granted Jul 10, 1990·1 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →