Fumio Obata

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Kitakyushu, JP

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Patents Grantslast 30 patents

Information Patent Grant
Spheroidal graphite cast iron member having improved mechanical str...
- Patent number 5,346,561
- Issue date Sep 13, 1994
- Hitachi Metals, Ltd.
- Fumio Obata
- C21 - METALLURGY OF IRON
Information Patent Grant
Method of producing spheroidal graphite cast iron article
- Patent number 5,186,233
- Issue date Feb 16, 1993
- Hitachi Metals, Ltd.
- Fumio Obata
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Spheroidal graphite cast iron
- Patent number 5,100,612
- Issue date Mar 31, 1992
- 501 Hitachi Metals, Ltd.
- Fumio Obata
- C21 - METALLURGY OF IRON
Information Patent Grant
Thin high-strength article of spheroidal graphite cast iron and met...
- Patent number 4,990,194
- Issue date Feb 5, 1991
- Hitachi Metals, Ltd.
- Fumio Obata
- C21 - METALLURGY OF IRON
Information Patent Grant
Process of producing nodular cast iron
- Patent number 4,889,688
- Issue date Dec 26, 1989
- Honda Giken Kogyo K.K.
- Makoto Suenaga
- C21 - METALLURGY OF IRON
Information Patent Grant
Brake member and method of manufacturing same
- Patent number 4,807,728
- Issue date Feb 28, 1989
- Hitachi Metals, Ltd.
- Makoto Suenaga
- B22 - CASTING POWDER METALLURGY