Inventor · disambiguated record
Takashi Kamikawa
Also filed as: KAMIKAWA TAKASHI
21 granted patents·9 pending applications·29 citations·filing 1993–2019
91Inventor score
Top patents by PatentIndex Score
30 records- 0177US9238665B2Method for producing aromatic compoundSUMITOMO CHEMICAL CO·Filed 2013·Granted Jan 19, 2016·2 cites·19 claims
- 0275US8598349B2Method for manufacturing conjugated aromatic compoundODA SEIJI·Filed 2010·Granted Dec 3, 2013·3 cites·18 claims
- 0371US8088883B2Transition metal complex and process for producing conjugated aromatic compound using the transition metal complexASAUMI TAKU·Filed 2008·Granted Jan 3, 2012·2 cites·25 claims
- 0470US8293905B2Bipyridine compound, transition metal complex, and method for production of conjugated aromatic compound using the transition metal complexASAUMI TAKU·Filed 2008·Granted Oct 23, 2012·1 cites·21 claims
- 0569US6548678B1Method for producing 5-phenoxycarbonylbenzotriazoleSUMITOMO CHEMICAL CO·Filed 2002·Granted Apr 15, 2003·4 cites·9 claims
- 0664US8237002B2Method for producing unsaturated organic compoundASAUMI TAKU·Filed 2009·Granted Aug 7, 2012·1 cites·9 claims
- 0763US6316666B1Method for producing purified phenylenedioxydiacetic acidsSUMITOMO CHEMICAL CO·Filed 2000·Granted Nov 13, 2001·3 cites·6 claims
- 0862US7041856B2Coupling catalyst and process using the sameSUMITOMO CHEMICAL CO·Filed 2002·Granted May 9, 2006·5 cites·18 claims
- 0960US7217677B2Method for producing coupling compoundSUMITOMO CHEMICAL CO·Filed 2004·Granted May 15, 2007·2 cites·8 claims
- 1059US11767401B2Gel containing condensation product of reactive silicon compoundSUMITOMO CHEMICAL CO·Filed 2019·Granted Sep 26, 2023·0 cites·19 claims
- 1157US7238832B2Production method of a coupling compoundSUMITOMO CHEMICAL CO·Filed 2004·Granted Jul 3, 2007·2 cites·8 claims
- 1254US6723870B2Method for producing anthracenesSUMITOMO CHEMICAL CO·Filed 2002·Granted Apr 20, 2004·1 cites·9 claims
- 1353US7122711B2Method for producing biaryl compoundSUMITOMO CHEMICAL CO·Filed 2002·Granted Oct 17, 2006·1 cites·19 claims
- 1452US7553988B2Method for producing coupling compoundSUMITOMO CHEMICAL COMPANY LIMT·Filed 2006·Granted Jun 30, 2009·0 cites·12 claims
- 1551US2009326188A1Method for producing polyaryleneSUMITOMO CHEMICAL CO·Filed 2007·Application pending·0 cites
- 1650US6965037B2Method for producing aminocarbazolesSUMITOMO CHEMICAL CO·Filed 2002·Granted Nov 15, 2005·0 cites·18 claims
- 1750US2009048413A1Method for Production of Conjugated PolymerSUMITOMO CHEMICAL CO·Filed 2007·Application pending·0 cites
- 1849US2006111593A1Coupling catalyst and process using the sameSUMITOMO CHEMICAL CO·Filed 2006·Application pending·0 cites
- 1948US2010292481A1Method for producing conjugated aromatic compoundSUMITOMO CHEMICAL CO·Filed 2008·Application pending·0 cites
- 2046US2009253015A1Polyarylene block copolymer and use thereofSUMITOMO CHEMICAL CO·Filed 2006·Application pending·0 cites
- 2146US2020407515A1Gel having interpenetrating networkSUMITOMO CHEMICAL CO·Filed 2018·Application pending·0 cites
- 2244US9453103B2Method for producing aromatic compoundSUMITOMO CHEMICAL CO·Filed 2013·Granted Sep 27, 2016·0 cites·9 claims
- 2342US2008287646A1Polyarylene and Method for Producing the SameSUMITOMO CHEMICAL CO·Filed 2006·Application pending·0 cites
- 2441US6384231B1Method of producing 2,4-oxazolidinediones and metal salts thereofSUMITOMO CHEMICAL CO·Filed 2001·Granted May 7, 2002·0 cites·16 claims
- 2540US11045796B2Process for producing aromatic compound, and palladium complexSUMITOMO CHEMICAL CO·Filed 2016·Granted Jun 29, 2021·0 cites·5 claims
- 2639US5254700AProcess for production of N-substituted carbazolesSUMITOMO CHEMICAL CO·Filed 1993·Granted Oct 19, 1993·2 cites·20 claims
- 2736US8236920B2Polyarylene and process for producing the sameHIDA NORIYUKI·Filed 2006·Granted Aug 7, 2012·0 cites·25 claims
- 2835US10765993B2Gel including condensation product of organic silicon compoundSUMITOMO CHEMICAL CO·Filed 2017·Granted Sep 8, 2020·0 cites·11 claims
- 2933US2011275780A1Method for producing conjugated aromatic compoundSUMITOMO CHEMCIAL COMPANY LTD·Filed 2010·Application pending·0 cites
- 3032US2001049448A1Method for producing aminocarbazolesFiled 1999·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when Takashi Kamikawa files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →