Takashi Otsuka

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Okayama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Inert gas injecting plate brick or insert nozzle brick for use in a...
- Patent number 5,613,545
- Issue date Mar 25, 1997
- Shinagawa Refractories Co. Ltd.
- Takashi Otsuka
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Discharge regulator of molten metal
- Patent number 5,316,271
- Issue date May 31, 1994
- Shinagawa Refractories Co., Ltd.
- Takashi Otsuka
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Opening element for an insert nozzle of a slide gate valve apparatu...
- Patent number 4,913,314
- Issue date Apr 3, 1990
- Shinagawa Refractories Co., Ltd.
- Takashi Otsuka
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Clamping and fixing apparatus for a refractory-made plate for a sli...
- Patent number 4,840,296
- Issue date Jun 20, 1989
- Shinagawa Refractories Co., Ltd.
- Takashi Otsuka
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Apparatus for pressure molding firebrick
- Patent number 4,609,338
- Issue date Sep 2, 1986
- Shinagawa Shirorenga Kabushiki Kaisha
- Shinji Nishida
- B28 - WORKING CEMENT, CLAY, OR STONE