Inventor · disambiguated record
Takafumi Kawanaka
Also filed as: KAWANAKA TAKAFUMI
8 granted patents·10 pending applications·119 citations·filing 1989–2020
87Inventor score
Top patents by PatentIndex Score
18 records- 0193US6657014B1Crosslinkable rubber composition and crosslinked objectZEON CORP·Filed 2000·Granted Dec 2, 2003·60 cites·17 claims
- 0273US5001196AProcess for preparation of diene type polymer rubberNIPPON ZEON CO·Filed 1989·Granted Mar 19, 1991·20 cites·9 claims
- 0371US7923514B2Method of hydrogenating conjugated diene polymer, hydrogenation catalyst system, and composition of basic, conjugated diene polymerZEON CORP·Filed 2007·Granted Apr 12, 2011·1 cites·7 claims
- 0469US8044147B2Nitrile group-containing copolymer rubber and a vulcanizable nitrile group-containing copolymer rubber compositionZEON CORP·Filed 2006·Granted Oct 25, 2011·2 cites·12 claims
- 0564US5294233AAdditive for organic medium or thermoplastic polymerNIPPON ZEON CO·Filed 1991·Granted Mar 15, 1994·16 cites·13 claims
- 0659US5216101AAcrylic copolymer elastomer and vulcanizable composition containing sameNIPPON ZEON CO·Filed 1992·Granted Jun 1, 1993·12 cites·2 claims
- 0756US2022315683A1Acrylic rubber bale excellent in storage stability and processabilityZEON CORP·Filed 2020·Application pending·0 cites
- 0856US2022259345A1Acrylic rubber bale excellent in storage stability and processabilityZEON CORP·Filed 2020·Application pending·0 cites
- 0951US2022235190A1Acrylic rubber sheet excellent in storage stability and processabilityZEON CORP·Filed 2020·Application pending·0 cites
- 1051US2023159682A1Acrylic rubber excellent in storage stabilityZEON CORP·Filed 2020·Application pending·0 cites
- 1150US2022251265A1Acrylic rubber bale excellent in processability and water resistanceZEON CORP·Filed 2020·Application pending·0 cites
- 1250US2022259348A1Acrylic rubber bale excellent in strength properties and processabilityZEON CORP·Filed 2020·Application pending·0 cites
- 1348US2022259347A1Acrylic rubber excellent in water resistanceZEON CORP·Filed 2020·Application pending·0 cites
- 1448US2022267491A1Acrylic rubber bale excellent in storage stability and processabilityZEON CORP·Filed 2020·Application pending·0 cites
- 1547US2004242800A1Method of hydrogenating conjugated diene polymer, hydrogenation catalyst system, and composition of basic conjugated diene polymerFiled 2002·Application pending·0 cites
- 1638US5334683AAcrylate polymer elastomer and vulcanizable composition containing the sameNIPPON ZEON CO·Filed 1993·Granted Aug 2, 1994·5 cites·14 claims
- 1736US2005158544A1Latex, fluid treatments for bonding, fibrous members, and composite member consisting of fiber member and vulcanized rubber membersFiled 2003·Application pending·0 cites
- 1835US5280080AAcrylic copolymer elastomer and vulcanizable composition containing sameNIPPON ZEON CO·Filed 1993·Granted Jan 18, 1994·3 cites·5 claims
Join the waitlist — get patent alerts
Get an alert when Takafumi Kawanaka 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 →