Inventor · disambiguated record
Kei Tajima
Also filed as: TAJIMA KEI
14 granted patents·8 pending applications·62 citations·filing 1998–2023
89Inventor score
Top patents by PatentIndex Score
22 records- 0189US7744781B2Conductive thermoplastic elastomer composition, method of producing same, and moldingSUMITOMO RUBBER IND·Filed 2007·Granted Jun 29, 2010·12 cites·9 claims
- 0287US7728060B2Conductive roller of rubber, thermoplastics, EO-PO-glycidyl ether, fluoro and sulfonyl anion salt and microcapsuleSUMITOMO RUBBER IND·Filed 2007·Granted Jun 1, 2010·11 cites·10 claims
- 0384US8277692B2Semiconductive rubber composition and semiconductive rubber roller employing the sameMARUI TAKASHI·Filed 2010·Granted Oct 2, 2012·5 cites·6 claims
- 0483US9639025B2Semiconductive rollerSUMITOMO RUBBER IND·Filed 2015·Granted May 2, 2017·2 cites·1 claims
- 0582US9064617B2Electrically conductive rubber composition, developing roller, and image forming apparatusSUMITOMO RUBBER IND·Filed 2013·Granted Jun 23, 2015·3 cites·3 claims
- 0676US8882646B2Semiconductive roller, charging roller and electrophotographic apparatusTAJIMA KEI·Filed 2011·Granted Nov 11, 2014·3 cites·8 claims
- 0772US9885970B2Semiconductive rollerSUMITOMO RUBBER IND·Filed 2015·Granted Feb 6, 2018·1 cites·5 claims
- 0871US9539744B2Semiconductive roller and production method thereforSUMITOMO RUBBER IND·Filed 2015·Granted Jan 10, 2017·1 cites·6 claims
- 0963US9274460B2Semiconductive roller, charging roller and electrophotographic apparatusSUMITOMO RUBBER IND·Filed 2014·Granted Mar 1, 2016·0 cites·8 claims
- 1059US2024197933A1Medical rubber productSUMITOMO RUBBER IND·Filed 2023·Application pending·0 cites
- 1157US2023190970A1Sterilization method for medical rubber partSUMITOMO RUBBER IND·Filed 2022·Application pending·0 cites
- 1256US9880490B2Semiconductive roller for image developing rollerSUMITOMO RUBBER IND·Filed 2016·Granted Jan 30, 2018·0 cites·4 claims
- 1356US6187420B1FenderSUMITOMO RUBBER IND·Filed 1998·Granted Feb 13, 2001·17 cites·9 claims
- 1455US2010261002A1Surface-treating liquid for conductive elastic layer, method of surface treatment of the same, and surface-treated conductive memberSUMITOMO RUBBER IND·Filed 2008·Application pending·0 cites
- 1555US2024189463A1Sterilization method for medical rubber partSUMITOMO RUBBER IND·Filed 2023·Application pending·0 cites
- 1652US9703225B2Semiconductive rollerSUMITOMO RUBBER IND·Filed 2016·Granted Jul 11, 2017·0 cites·5 claims
- 1751US10012927B2Developing roller including roller body with simplified structure without a coating filmSUMITOMO RUBBER IND·Filed 2017·Granted Jul 3, 2018·0 cites·6 claims
- 1851US6572307B2Fender with step and/or projectionSUMITOMO RUBBER IND·Filed 2000·Granted Jun 3, 2003·7 cites·10 claims
- 1943US2017168415A1Electrically conductive rubber composition, and developing rollerSUMITOMO RUBBER IND·Filed 2016·Application pending·0 cites
- 2042US2014342892A1Semiconductive rollerSUMITOMO RUBBER IND·Filed 2014·Application pending·0 cites
- 2139US2013288869A1Electrically conductive rollerSUMITOMO RUBBER IND·Filed 2013·Application pending·0 cites
- 2237US2017168416A1Electrically conductive rubber composition, and developing rollerSUMITOMO RUBBER IND·Filed 2016·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →