Masazumi Sawa

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Nagoya, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for roller type processing
- Patent number 6,477,879
- Issue date Nov 12, 2002
- Tri Engineering Company Limited
- Masazumi Sawa
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Method for hemming a workpiece having an upturned edge
- Patent number 5,267,387
- Issue date Dec 7, 1993
- Triengineering Co., Ltd.
- Masazumi Sawa
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Roller type hemming apparatus
- Patent number 5,228,190
- Issue date Jul 20, 1993
- Triengineering Company, Ltd.
- Masazumi Sawa
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Apparatus for hemming a workpiece having an upturned edge
- Patent number 5,224,253
- Issue date Jul 6, 1993
- Triengineering Co., Ltd.
- Masazumi Sawa
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...