Inventor
SUGIHARA HIROSADA
31 patents
Patents
31 patentsUS4997836AMar 5, 1991
Trisubstituted piperazine compounds, their production and use
TAKEDA CHEMICAL INDUSTRIES LTD79 citations96
US4937246AJun 26, 1990
PAF antagonist, 1,4-disubstituted piperazine compounds and production thereof
TAKEDA CHEMICAL INDUSTRIES LTD27 citations92
US5550131AAug 27, 1996
2-piperazinone compounds and their use
TAKEDA CHEMICAL INDUSTRIES LTD22 citations89
US4871842AOct 3, 1989
Piperidine derivatives
TAKEDA CHEMICAL INDUSTRIES LTD15 citations82
US4548932AOct 22, 1985
3-Amino-4-oxo-2,3,4,5-tetrahydro-1,5-benzoxazepine derivatives
TAKEDA CHEMICAL INDUSTRIES LTD21 citations82
US4143042AMar 6, 1979
1-azaxanthone-3-carboxylic acids
TAKEDA CHEMICAL INDUSTRIES LTD21 citations81
US5294713AMar 15, 1994
2-piperazinone compounds and their use
TAKEDA CHEMICAL INDUSTRIES LTD19 citations78
US4880809ANov 14, 1989
1,4-disubstituted piperazines (or homopiperazines) as platelet-activating factor antagonists
TAKEDA CHEMICAL INDUSTRIES LTD13 citations74
US4564612AJan 14, 1986
Condensed, seven-membered ring compounds and their use
TAKEDA CHEMICAL INDUSTRIES LTD8 citations74
US4299963ANov 10, 1981
1-Azaxanthone derivatives
TAKEDA CHEMICAL INDUSTRIES LTD16 citations72
US4255576AMar 10, 1981
1-Azaxanthone derivatives
TAKEDA CHEMICAL INDUSTRIES LTD7 citations72
US4035512AJul 12, 1977
Aminotetralols
TAKEDA CHEMICAL INDUSTRIES LTD19 citations72
US4010202AMar 1, 1977
5,6-Dihydroxy aminotetralol compounds
TAKEDA CHEMICAL INDUSTRIES LTD11 citations72
US4017517AApr 12, 1977
2-(Trisubstituted benzoyl)-propionic acid and a method for the production thereof
TAKEDA CHEMICAL INDUSTRIES LTD9 citations71
US3943169AMar 9, 1976
3-(Trisubstituted benzoyl)-propionic acid
TAKEDA CHEMICAL INDUSTRIES LTD9 citations71
US4954625ASep 4, 1990
Piperidine derivatives, their production and use
TAKEDA CHEMICAL INDUSTRIES LTD2 citations63
US4816466AMar 28, 1989
Piperidine derivatives
TAKEDA CHEMICAL INDUSTRIES LTD3 citations63
US4736031AApr 5, 1988
2-(piperazinylalkyl)-1-benzothiepin, 1-benzoxepin, and 1,5-benzodioxepin derivatives
TAKEDA CHEMICAL INDUSTRIES LTD5 citations63
US4638000AJan 20, 1987
Condensed seven-membered ring compounds, their production and use
TAKEDA CHEMICAL INDUSTRIES LTD5 citations63
US4591458AMay 27, 1986
3-amino-4-oxo-2,3,4,5-tetrahydro-1,5-benzoxazepine derivatives
TAKEDA CHEMICAL INDUSTRIES LTD3 citations63
US4362740ADec 7, 1982
Spiro compounds, their production and use
TAKEDA CHEMICAL INDUSTRIES LTD3 citations62
US4342779AAug 3, 1982
7-Acetylspirobenzofuranone compound
TAKEDA CHEMICAL INDUSTRIES LTD4 citations62
US4330554AMay 18, 1982
Spirobenzofuranone compounds
TAKEDA CHEMICAL INDUSTRIES LTD3 citations62
US4284644AAug 18, 1981
Spirobenzofuranone compounds
TAKEDA CHEMICAL INDUSTRIES LTD4 citations62
US4104402AAug 1, 1978
5,6-Dihydroxy aminotetralol compounds
TAKEDA CHEMICAL INDUSTRIES LTD3 citations61
US4041079AAug 9, 1977
Bicyclic compounds
TAKEDA CHEMICAL INDUSTRIES LTD3 citations61
US4029699AJun 14, 1977
3,(2,4,5-Trisubstituted benzoyl)-propionic acid and the salts thereof
TAKEDA CHEMICAL INDUSTRIES LTD2 citations60
US4751316AJun 14, 1988
1,5-benzoxathiepin derivatives
TAKEDA CHEMICAL INDUSTRIES LTD1 citations52
US4739066AApr 19, 1988
Intermediates for the preparation of condensed seven-membered ring compounds
TAKEDA CHEMICAL INDUSTRIES LTD1 citations52
US4672064AJun 9, 1987
1,5-benzoxathiepin derivatives, their production and use
TAKEDA CHEMICAL INDUSTRIES LTD1 citations52
US4558068ADec 10, 1985
Spirobenzofuranones and their use in treating peptic ulcers
TAKEDA CHEMICAL INDUSTRIES LTD0 citations52