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Ibaraki, JP
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last 30 patents
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Patent Grant
Tablets having clear impressed marks and method for making same
Patent number
5,002,775
Issue date
Mar 26, 1991
Sumitomo Chemical Company, Limited
Kazutoshi Toya
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Patent Grant
Method for preparing urokinase injection
Patent number
4,244,943
Issue date
Jan 13, 1981
Sumitomo Chemical Company, Limited
Yoshiya Yamahira
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Patent Grant
Process for producing light-colored clear petroleum resins
Patent number
4,156,762
Issue date
May 29, 1979
Sumitomo Chemical Company, Limited
Ken-ichi Kudo
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...