Inventor
SUMIDA KENJI
JP8 patents
⚠️ This page may combine multiple inventors who share the name “SUMIDA KENJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
WASHI KOSAN KK
4 patentsUS6075652AJun 13, 2000
Convex-microgranular surface structure
WASHI KOSAN KK69 citations94
US6183081B1Feb 6, 2001
Kit providing independent right and left eyeglass lenses with side frames and method for assembly thereof
WASHI KOSAN KK15 citations82
US4978101ADec 18, 1990
Solenoid controlled valve ofr liquid preparation
WASHI KOSAN KK9 citations65
US7702573B2Apr 20, 2010
Debt reduction method and device thereof
WASHI KOSAN KK3 citations61