Hiroyuki Hagiwara

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Kumagaya, JP

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Patents Grantslast 30 patents

Information Patent Grant
Vacuum casting method and vacuum casting apparatus
- Patent number 5,706,880
- Issue date Jan 13, 1998
- Hitachi Metals, Ltd.
- Hiroshi Ohnuma
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Take-up apparatus for amorphous metal ribbon
- Patent number 5,004,172
- Issue date Apr 2, 1991
- Hitachi Metals Ltd.
- Masaaki Tanahashi
- B22 - CASTING POWDER METALLURGY