Takao Yamazaki

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Fujisawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method and installation for producing biconical wire
- Patent number 6,035,686
- Issue date Mar 14, 2000
- Muhr und Bender
- Thomas Muhr
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Cutting method to be applied to producing helical springs by cold-f...
- Patent number 4,705,580
- Issue date Nov 10, 1987
- Neturen Co., Ltd.
- Takao Yamazaki
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
High-strength spring steel and its manufacturing process
- Patent number 4,222,799
- Issue date Sep 16, 1980
- Neturen Company, Ltd.
- Toshio Hijikata
- C21 - METALLURGY OF IRON