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Osamu Umekawa
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Nagoshi, JP
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last 30 patents
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Patent Grant
Microbicidal/microbistatic compositions for industrial use employin...
Patent number
4,647,577
Issue date
Mar 3, 1987
Katayama Chemical Works Co., Ltd.
Osamu Umekawa
A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
Information
Patent Grant
Microbicidal/microbistatic compositions and use thereof employing m...
Patent number
4,518,610
Issue date
May 21, 1985
Katayama Chemical Works Co., Ltd.
Osamu Umekawa
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Microbicidal/microbistatic compositions for industrial use
Patent number
4,466,975
Issue date
Aug 21, 1984
Yoshitomi Pharmaceutical Industries, Ltd.
Masato Magami
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Easily dispersible composition for water soluble polymer
Patent number
4,409,353
Issue date
Oct 11, 1983
Katayama Chemical Works Co., Ltd.
Osamu Umekawa
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Microbicidal compositions for industrial use
Patent number
4,334,957
Issue date
Jun 15, 1982
Katayama Chemical Works Co. Ltd.
Sakae Katayama
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Microbicidal slimicide compositions for industrial use
Patent number
4,289,581
Issue date
Sep 15, 1981
Katayama Chemical Works Co., Ltd.
Sakae Katayama
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Process for the preparation of bromoacetic acid and esters thereof
Patent number
4,123,443
Issue date
Oct 31, 1978
Katayama Chemical Works Co., Ltd.
Umekawa Osamu
C07 - ORGANIC CHEMISTRY