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Futoshi Mizutani
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Yokohama, JP
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last 30 patents
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Patent Grant
Method for producing glass preform for optical fiber containing flu...
Patent number
4,880,452
Issue date
Nov 14, 1989
Sumitomo Electric Industries, Ltd.
Hiroo Kanamori
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Method of manufacturing fiber preform for single-mode fibers
Patent number
4,875,918
Issue date
Oct 24, 1989
Sumitomo Electric Industries, Ltd.
Futoshi Mizutani
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Method for producing glass preform for optical fiber
Patent number
4,846,867
Issue date
Jul 11, 1989
Sumitomo Electric Industries, Ltd.
Hiroshi Yokota
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Heating apparatus for drawing glass rod
Patent number
4,750,927
Issue date
Jun 14, 1988
Sumitomo Electric Industries, Ltd.
Futoshi Mizutani
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Method for producing glass preform for optical fiber
Patent number
4,731,103
Issue date
Mar 15, 1988
Sumitomo Electric Industries, Ltd.
Futoshi Mizutani
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Method for producing glass preform for single mode optical fiber
Patent number
4,675,040
Issue date
Jun 23, 1987
Sumitomo Electric Industries, Ltd.
Gotaro Tanaka
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Method for producing glass preform for optical fiber
Patent number
4,668,263
Issue date
May 26, 1987
Sumitomo Electric Industries, Ltd.
Hiroshi Yokota
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Process of producing a highly pure glass tube
Patent number
4,666,488
Issue date
May 19, 1987
Sumitomo Electric Industries, Ltd.
Futoshi Mizutani
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Method for producing highly pure glass preform for optical fiber
Patent number
4,627,867
Issue date
Dec 9, 1986
Sumitomo Electric Industries, Ltd.
Gotaro Tanaka
C03 - GLASS MINERAL OR SLAG WOOL