Takashi Kawamoto

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Tochigi-ken, JP

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Patents Grantslast 30 patents

Information Patent Grant
Sintered Fe alloy for valve seat
- Patent number 5,895,517
- Issue date Apr 20, 1999
- Nippon Piston Ring Co., Ltd.
- Osamu Kawamura
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Abrasion resistant valve seat made of sintered alloy for internal c...
- Patent number 5,870,989
- Issue date Feb 16, 1999
- Nippon Piston Ring Co., Ltd.
- Teruo Takahashi
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...