Ritsuo Okabe

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Chiba, JP

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Patents Grantslast 30 patents

Information Patent Grant
Iron base powder mixture and method
- Patent number 5,135,566
- Issue date Aug 4, 1992
- Kawasaki Steel Corporation
- Ichio Sakuranda
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Method of preparing iron base powder mixture for pm
- Patent number 4,946,499
- Issue date Aug 7, 1990
- Kawasaki Steel Corp.
- Ichio Sakuranda
- B22 - CASTING POWDER METALLURGY