Toho Kinzoku Co., Ltd.

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Osaka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method of manufacturing a semiconductor substrate material
- Patent number 5,905,938
- Issue date May 18, 1999
- Toho Kinzoku Co., Ltd.
- Naoyoshi Akiyoshi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Copper-tungsten alloys and their manufacturing methods
- Patent number 5,889,220
- Issue date Mar 30, 1999
- Toho Kinzoku Co, Ltd
- Naoyoshi Akiyoshi
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Method of manufacturing molded copper-chromium family metal alloy a...
- Patent number 5,689,796
- Issue date Nov 18, 1997
- Citizen Watch Co., Ltd.
- Takao Kasai
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Tungsten electrode material
- Patent number 5,512,240
- Issue date Apr 30, 1996
- Toho Kinzoku Co., Ltd.
- Fukuhisa Matusda
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Ceramics coated cemented-carbide tool with high-fracture resistance
- Patent number 5,123,934
- Issue date Jun 23, 1992
- Nippon Steel Corporation
- Sakae Katayama
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Discharge electrode material composed of yttrium and rhenium or rut...
- Patent number 4,882,519
- Issue date Nov 21, 1989
- Toho Kinzoku Co., Ltd.
- Yoshinori Maeno
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR

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