Hiromu Oka

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Chiba, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method of producing seamless steel tube by using mandrel mill
- Patent number 5,513,511
- Issue date May 7, 1996
- Kawasaki Steel Corporation
- Toshio Imae
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Mold additives for use in continuous casting
- Patent number 4,806,163
- Issue date Feb 21, 1989
- Kawasaki Steel Corporation
- Hakaru Nakato
- B22 - CASTING POWDER METALLURGY