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Hirohide Takayama
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Tokyo, JA
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last 30 patents
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Patent Grant
Compounds of allantoin with basic amino acids
Patent number
4,038,287
Issue date
Jul 26, 1977
Kawaken Fine Chemicals Co., Ltd.
Hirohide Takayama
C07 - ORGANIC CHEMISTRY
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Patent Grant
Allantoin compound with a metal salt of 2-pyrrolidone-5-carboxylic...
Patent number
4,025,525
Issue date
May 24, 1977
Kawaken Fine Chemicals Co., Ltd.
Hirohide Takayama
C07 - ORGANIC CHEMISTRY