Joo Ishihara

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Hitachi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Roll for a rolling mill, method of producing the same and the rolli...
- Patent number 4,697,320
- Issue date Oct 6, 1987
- Hitachi, Ltd.
- Joo Ishihara
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Magnetic separator matrix of cut pieces of an elongated crystalline...
- Patent number 4,668,591
- Issue date May 26, 1987
- Hitachi, Ltd.
- Tetsuroh Minemura
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Method of producing material for superconductor
- Patent number 4,560,404
- Issue date Dec 24, 1985
- Hitachi, Ltd.
- Katsuzo Aihara
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Apparatus for producing metal ribbon
- Patent number 4,301,855
- Issue date Nov 24, 1981
- Hitachi, Ltd., Research Development Corporation of Japan
- Hideo Suzuki
- B22 - CASTING POWDER METALLURGY