Hideto Yamada

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Akashi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Aqueous dispersed solution of substituted succinic anhydride and pr...
- Patent number 4,882,087
- Issue date Nov 21, 1989
- Seiko Kagaku Kogyo Co., Ltd.
- Shigehiko Yoshioka
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Process for making paper using a substituted succinic anhydride as...
- Patent number 4,849,055
- Issue date Jul 18, 1989
- Seiko Kagaku Kogyo Co., Ltd.
- Shigehiko Yoshioka
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Composition for sizing agent and process for using the same composi...
- Patent number 4,810,301
- Issue date Mar 7, 1989
- Seiko Kagaku Kogyo Co., Ltd.
- Shigehiko Yoshioka
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Composition for sizing agent and process for using the same composi...
- Patent number 4,717,452
- Issue date Jan 5, 1988
- Seiko Kagaku Kogyo Co., Ltd.
- Shigehiko Yoshioka
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for sizing paper and process for making plasterboard base p...
- Patent number 4,533,434
- Issue date Aug 6, 1985
- Seiko Kagaku Kogyo Co., Ltd.
- Shigehiko Yoshioka
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Cellulose processing agents and paper processed therewith
- Patent number 4,405,408
- Issue date Sep 20, 1983
- Seiko Kagaku Kogyo Co., Ltd.
- Shigehiko Yoshioka
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE