Hirofumi Kamisugi

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Hamamatsu, JP

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for steel hardening and process therefor
- Patent number 5,795,538
- Issue date Aug 18, 1998
- Dowa Mining Co., Ltd.
- Fumitaka Abukawa
- C21 - METALLURGY OF IRON
Information Patent Grant
Gas carburizing process and an apparatus therefor
- Patent number 5,676,769
- Issue date Oct 14, 1997
- Dowa Mining Co. Ltd.
- Toshiyuki Kawamura
- C21 - METALLURGY OF IRON