Inventor
IZUMI KEIKO
JP6 patents
⚠️ This page may combine multiple inventors who share the name “IZUMI KEIKO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NIPPON CATALYTIC CHEM IND
3 patentsUS7851568B2Dec 14, 2010
Vinylpyrrolidone-based copolymer and a method for production thereof
NIPPON CATALYTIC CHEM IND4 citations60
US10982167B2Apr 20, 2021
Viscosity index improver and lubricating oil composition
NIPPON CATALYTIC CHEM IND0 citations42
US10443013B2Oct 15, 2019
Viscosity index improver, method for producing the same and lubricating oil composition
NIPPON CATALYTIC CHEM IND0 citations28