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Isao Umezawa
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Tokyo, JP
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Patents Grants
last 30 patents
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Patent Grant
Sulfonamide derivatives and drugs containing the same as the active...
Patent number
6,403,607
Issue date
Jun 11, 2002
Hiroyoshi Hidaka
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Compound having vessel smooth muscle relaxation activity
Patent number
5,245,034
Issue date
Sep 14, 1993
Hidaka; Kiroyoshi
Hiroyoshi Hidaka
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Derivatives of physiologically active substance ML-236B and process...
Patent number
5,245,050
Issue date
Sep 14, 1993
Tobishi Yakuhin Kogyo Kabushiki Kaisha
Akira Endo
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Derivatives of isoquinoline (and naphthalene) sulfonamides
Patent number
5,216,150
Issue date
Jun 1, 1993
Hidaka; Hiroyoshi
Hiroyoshi Hidaka
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Compound having vessel smooth muscle relaxation activity
Patent number
5,081,246
Issue date
Jan 14, 1992
Hidaka; Hiroyoshi
Horoyoshi Hidaka
C07 - ORGANIC CHEMISTRY