Takeshi Sumi

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Shimodate, JP

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Patents Grantslast 30 patents

Information Patent Grant
Process for preparing foundry cores or molds and binder materials u...
- Patent number 4,362,203
- Issue date Dec 7, 1982
- Hitachi Chemical Co., Ltd.
- Susumu Konii
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Process for preparing foundry cores or molds and binder materials u...
- Patent number 4,283,319
- Issue date Aug 11, 1981
- Hitachi Chemical Company, Ltd.
- Susumu Konii
- B22 - CASTING POWDER METALLURGY