Koji Koyanagi

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Wear resistant sintered member
- Patent number 6,562,098
- Issue date May 13, 2003
- Hitachi Powdered Metals Co., Ltd.
- Hiroki Fujitsuka
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...