Inventor
KIBA YASUO
JP10 patents
⚠️ This page may combine multiple inventors who share the name “KIBA YASUO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TOYAMA CHEMICAL CO LTD
9 patentsUS4643849AFeb 17, 1987
Intermediates for urea and thiourea derivatives
TOYAMA CHEMICAL CO LTD53 citations92
US4610983ASep 9, 1986
N-acyl acidic amino acid diamide derivative, a salt thereof, and an anti-ulcer agent containing the same
TOYAMA CHEMICAL CO LTD30 citations89
US4436921AMar 13, 1984
1-(4-Aminobenzyl)-2,3-dioxopiperazine derivatives, acid addition salts thereof and process for producing same
TOYAMA CHEMICAL CO LTD4 citations72
US4477666AOct 16, 1984
1-(4-Aminobenzyl)-2,3-dioxopiperazine derivatives, acid addition salts thereof and process for producing same
TOYAMA CHEMICAL CO LTD2 citations61
US4477664AOct 16, 1984
Novel 1-(4-piperidiniobenzyl)-2,3-dioxopiperazine derivatives or acid addition salts thereof
TOYAMA CHEMICAL CO LTD1 citations61
US4448963AMay 15, 1984
4-[4-(Thiazolyl-amino)benzyl]-2,3-dioxopiperazine derivatives, acid addition salts thereof and process for producing same
TOYAMA CHEMICAL CO LTD1 citations61
US5120746AJun 9, 1992
Amine derivatives, salts thereof, process for preparing the same and an anti-ulcer agent containing the same
TOYAMA CHEMICAL CO LTD2 citations58
US4459407AJul 10, 1984
1-(4-Aminobenzyl)-2,3-dioxopiperazine derivatives and salts thereof
TOYAMA CHEMICAL CO LTD0 citations51
US4923882AMay 8, 1990
Novel amine derivatives, salts thereof and an anti-ulcer agent containing the same
TOYAMA CHEMICAL CO LTD1 citations48