Izumi Hayakawa

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Composite abrasive-articles and manufacturing method therefor
- Patent number 5,011,510
- Issue date Apr 30, 1991
- Mitsui Mining & Smelting Co., Ltd.
- Izumi Hayakawa
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Metallurgically bonded diamond-metal composite sintered materials a...
- Patent number 4,439,237
- Issue date Mar 27, 1984
- Mitsui Mining & Smelting Co., Ltd.
- Shiro Kuminitsu
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Sintered metal bonded diamond abrasive articles
- Patent number 4,362,535
- Issue date Dec 7, 1982
- Mitsui Mining & Smelting Co., Ltd.
- Eiji Isobe
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...