Sumikazu Oki

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Yokohama-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Magnetic marker and manufacturing method therefor
- Patent number 6,864,793
- Issue date Mar 8, 2005
- NHK Spring Co., Ltd.
- Yoshiki Ono
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...

Patents Applicationslast 30 patents

Information Patent Application
Magnetic marker and manufacturing method therefor
- Publication number 20020122956
- Publication date Sep 5, 2002
- NHK Spring Co., Ltd.
- Yoshiki Ono
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...