Hiroshi Koyama

Follow

Person

Hitachi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Control method and apparatus for rolling mill
- Patent number 4,566,299
- Issue date Jan 28, 1986
- Hitachi, Ltd.
- Hiroshi Koyama
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Roll eccentricity control system for a rolling apparatus
- Patent number 4,545,228
- Issue date Oct 8, 1985
- Hitachi, Ltd.
- Terushige Yamaguti
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...