Yoshio Aso

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Chiba, JP

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Patents Grantslast 30 patents

Information Patent Grant
Non-fibrous potassium titanate and method for producing the same
- Patent number 6,251,361
- Issue date Jun 26, 2001
- Kawatetsu Mining Co., Ltd.
- Hidefumi Konnai
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Potassium titanate substantially free of respirable fibers and meth...
- Patent number 6,036,938
- Issue date Mar 14, 2000
- Kawatetsu Mining Co., Ltd.
- Hidefumi Konnai
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method of making agglomerate of whiskers or short fibers
- Patent number 5,269,993
- Issue date Dec 14, 1993
- Kawasaki Mining Co. Ltd.
- Tadao Shimizu
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Agglomerate of whiskers or short fibers
- Patent number 5,185,204
- Issue date Feb 9, 1993
- Kawatetsu Minig Co., Ltd.
- Tadao Shimizu
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Process for purifying silica
- Patent number 4,676,964
- Issue date Jun 30, 1987
- Kawatetsu Mining Company, Ltd.
- Akira Seki
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Method of stabilizing a steel making slag
- Patent number 4,655,831
- Issue date Apr 7, 1987
- Kawasaki Steel Corporation
- Kunihiko Ishizaka
- C21 - METALLURGY OF IRON