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Patents Grants
last 30 patents
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Patent Grant
Punch, powder pressing apparatus and powder pressing method
Patent number
6,755,883
Issue date
Jun 29, 2004
Sumitomo Special Metals Co., Ltd.
Seiichi Kohara
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Punch, powder pressing apparatus and powder pressing method
Patent number
6,656,417
Issue date
Dec 2, 2003
Sumitomo Special Metals Co., Ltd.
Seiichi Kohara
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Powder pressing apparatus and powder pressing method
Patent number
6,649,124
Issue date
Nov 18, 2003
Sumitomo Special Metals Co., Ltd.
Seiichi Kohara
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Punch, powder pressing apparatus and powder pressing method
Patent number
6,332,932
Issue date
Dec 25, 2001
Sumitomo Special Metals Co., Ltd.
Seiichi Kohara
B22 - CASTING POWDER METALLURGY
Patents Applications
last 30 patents
Information
Patent Application
Punch, powder pressing apparatus and powder pressing method
Publication number
20020192484
Publication date
Dec 19, 2002
Sumitomo Special Metals Co. Ltd.
Seiichi Kohara
B22 - CASTING POWDER METALLURGY
Information
Patent Application
Powder pressing apparatus and powder pressing method
Publication number
20020006348
Publication date
Jan 17, 2002
SUMITOMO SPECIAL METALS CO., LTD.
Seiichi Kohara
B22 - CASTING POWDER METALLURGY
Information
Patent Application
Punch, powder pressing apparatus and powder pressing method
Publication number
20010031216
Publication date
Oct 18, 2001
SUMITOMO SPECIAL METALS CO., LTD.
Seiichi Kohara
B22 - CASTING POWDER METALLURGY