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Kiyoshi Tanaka
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Toyama, JP
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last 30 patents
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Patent Grant
Novel process for producing a cephalosporin
Patent number
4,736,026
Issue date
Apr 5, 1988
Toyama Chemical Co., Ltd.
Hiroyuki Imaizumi
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Aminothiazole intermediate for a cephalosporin
Patent number
4,656,287
Issue date
Apr 7, 1987
Toyoma Chemical Co., Ltd.
Hiroyuki Imaizumi
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for producing 7-(substituted)amino-3-substituted thiomethyl...
Patent number
4,385,178
Issue date
May 24, 1983
Toyama Chemical Co., Ltd.
Isamu Saikawa
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for producing 7-(substituted)amino-3-substituted thiomethyl...
Patent number
4,317,907
Issue date
Mar 2, 1982
Toyama Chemical Co., Ltd.
Isamu Saikawa
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for producing 7-(substituted)amino-3-substituted thiomethyl...
Patent number
4,312,986
Issue date
Jan 26, 1982
Toyama Chemical Co., Ltd.
Isamu Saikawa
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for producing 7-(D(-)-.alpha.-(4-ethyl-2,3-dioxo-1-piperazi...
Patent number
4,304,909
Issue date
Dec 8, 1981
Toyama Chemical Co., Ltd.
Isamu Saikawa
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Intermediate for cephalosporin type compound
Patent number
4,237,280
Issue date
Dec 2, 1980
Toyama Chemical Company, Limited
Isamu Saikawa
C07 - ORGANIC CHEMISTRY