Kazuo Wakana

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Rare earth-cobalt system permanent magnetic alloys and method of pr...
- Patent number RE31317
- Issue date Jul 19, 1983
- Namiki Precision Jewel Co., Ltd.
- Nobuo Imaizumi
- 148 - Metal treatment
Information Patent Grant
Rare earth-cobalt system permanent magnetic alloys and method of pr...
- Patent number 4,221,613
- Issue date Sep 9, 1980
- Namiki Precision Jewel Co., Ltd.
- Nobuo Imaizumi
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...