Osamu Mayama

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Niigata, JP

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Patents Grantslast 30 patents

Information Patent Grant
Valve seat made of sintered iron base alloy having high wear resist...
- Patent number 5,031,878
- Issue date Jul 16, 1991
- Mitsubishi Metal Corporation
- Yoshimi Ishikawa
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Fe-based sintered alloy for valve seats for use in internal combust...
- Patent number 4,836,848
- Issue date Jun 6, 1989
- Mitsubishi Kinzoku Kabushiki Kaisha
- Osamu Mayama
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Process for manufacturing cobalt-base reduced powder
- Patent number 4,131,450
- Issue date Dec 26, 1978
- Mitsubishi Kinzoku Kabushiki Kaisha
- Yuichi Saito
- B22 - CASTING POWDER METALLURGY