Inventor
TAJIMA KEI
JP15 patents
⚠️ This page may combine multiple inventors who share the name “TAJIMA KEI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SUMITOMO RUBBER IND
13 patentsUS7744781B2Jun 29, 2010
Conductive thermoplastic elastomer composition, method of producing same, and molding
SUMITOMO RUBBER IND12 citations83
US6187420B1Feb 13, 2001
Fender
SUMITOMO RUBBER IND17 citations83
US7728060B2Jun 1, 2010
Conductive roller of rubber, thermoplastics, EO-PO-glycidyl ether, fluoro and sulfonyl anion salt and microcapsule
SUMITOMO RUBBER IND11 citations82
US9639025B2May 2, 2017
Semiconductive roller
SUMITOMO RUBBER IND2 citations72
US6572307B2Jun 3, 2003
Fender with step and/or projection
SUMITOMO RUBBER IND7 citations64
US9064617B2Jun 23, 2015
Electrically conductive rubber composition, developing roller, and image forming apparatus
SUMITOMO RUBBER IND3 citations61
US12577377B2Mar 17, 2026
Medical rubber composition, medical rubber part, and packaging article for medical rubber part
SUMITOMO RUBBER IND0 citations56
US9885970B2Feb 6, 2018
Semiconductive roller
SUMITOMO RUBBER IND1 citations51
US9880490B2Jan 30, 2018
Semiconductive roller for image developing roller
SUMITOMO RUBBER IND0 citations51
US9703225B2Jul 11, 2017
Semiconductive roller
SUMITOMO RUBBER IND0 citations51
US9539744B2Jan 10, 2017
Semiconductive roller and production method therefor
SUMITOMO RUBBER IND1 citations51
US9274460B2Mar 1, 2016
Semiconductive roller, charging roller and electrophotographic apparatus
SUMITOMO RUBBER IND0 citations51
US10012927B2Jul 3, 2018
Developing roller including roller body with simplified structure without a coating film
SUMITOMO RUBBER IND0 citations48