Inventor
HAMAMURA KIMIO
JP19 patents
⚠️ This page may combine multiple inventors who share the name “HAMAMURA KIMIO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
EISAI CO LTD
11 patentsUS4039573AAug 2, 1977
Process for preparation of 1,4-benzohydroquinone derivatives
EISAI CO LTD9 citations73
US4130648ADec 19, 1978
5-Fluorouracil derivatives and antitumor preparations containing the same
EISAI CO LTD7 citations72
US4107193AAug 15, 1978
Polyprenyl carboxylic acid compound
EISAI CO LTD6 citations72
US4163864AAug 7, 1979
Process for preparing 2-methyl-3-prenyl-4,5,6-trimethoxyphenol
EISAI CO LTD6 citations71
US3998858ADec 21, 1976
Process for synthesis of coenzymes q
EISAI CO LTD7 citations71
US4433159AFeb 21, 1984
Synthesis of optically active d-alpha tocopherol
EISAI CO LTD5 citations62
US4130659ADec 19, 1978
Polyprenyl carboxylic acid compound and hypotensive agent containing it as active ingredient
EISAI CO LTD4 citations61
US5245060ASep 14, 1993
Terpene derivatives and process for preparing the same
EISAI CO LTD3 citations59
US5104996AApr 14, 1992
Process for preparing 2,3,5-trimethylbenzoquinone
EISAI CO LTD2 citations59
US5102895AApr 7, 1992
Novel vitamin e derivatives and process for the production thereof
EISAI CO LTD2 citations57
US4057568ANov 8, 1977
Process for synthesis of boric acid ester
EISAI CO LTD0 citations50
EISAI KAGAKU KK
8 patentsUS5412124AMay 2, 1995
Preparation process of naphthoquinone derivative and intermediate for the preparation thereof
EISAI KAGAKU KK6 citations72
US5874611AFeb 23, 1999
Butenyl hydroquinone derivatives
EISAI KAGAKU KK2 citations61
US5686635ANov 11, 1997
Tetrahydro-alkenyl-methanonaphthalene-5,8-dione derivatives
EISAI KAGAKU KK1 citations61
US5677471AOct 14, 1997
Process for the preparation of quinone derivative
EISAI KAGAKU KK2 citations61
US5476955ADec 19, 1995
Process for the preparation of a quinone derivative
EISAI KAGAKU KK4 citations61
US5998611ADec 7, 1999
Process for producing cephem compounds in an aqueous medium
EISAI KAGAKU KK3 citations59
US5608092AMar 4, 1997
1,4,4a 5,8,9a -hexahydro-1α,4α-methanoan-thraquinone derivative(s)
EISAI KAGAKU KK1 citations51
US5565586AOct 15, 1996
Oxidative process for the preparation of allyl quinone derivatives
EISAI KAGAKU KK0 citations51