Inventor
KUMA RYOJI
JP4 patents
⚠️ This page may combine multiple inventors who share the name “KUMA RYOJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NIPPON CATALYTIC CHEM IND
3 patentsUS7264784B2Sep 4, 2007
Method for treating exhaust gas
NIPPON CATALYTIC CHEM IND9 citations71
US6884402B2Apr 26, 2005
Catalyst for purification of exhaust gases, production process therefor, and process for purification of exhaust gases
NIPPON CATALYTIC CHEM IND5 citations71
US6638486B2Oct 28, 2003
Catalyst for purification of exhaust gases, production process therefor, and process for purification of exhaust gases
NIPPON CATALYTIC CHEM IND11 citations71