Sadao Yoshizawa

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Hokkaido, JP

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Patents Grantslast 30 patents

Information Patent Grant
Entrance roller guide apparatus
- Patent number 6,237,387
- Issue date May 29, 2001
- Kotobuki Sangyo Kabushiki Kaisha
- Sadao Yoshizawa
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Positioning control device for guide apparatus
- Patent number 5,970,772
- Issue date Oct 26, 1999
- Kotobuki Sangyo Kabushiki Kaisha
- Sadao Yoshizawa
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Guiding method for steel materials to be rolled and roller guide sy...
- Patent number 5,412,970
- Issue date May 9, 1995
- Kotobuki Sangyo Kabushiki Kaisha
- Tadashi Kawamura
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Four-roller type sizing mill apparatus for producing round steel rods
- Patent number 5,363,682
- Issue date Nov 15, 1994
- Kawasaki Steel Corporation
- Ryo Takeda
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...