Harumi Obata

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Gunma, JP

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Patents Grantslast 30 patents

Information Patent Grant
Roll forming system for forming flanges in strip material
- Patent number 6,928,847
- Issue date Aug 16, 2005
- Calsonic Kansei Corporation
- Tomoaki Akutsu
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Formed strip and roll forming
- Patent number 6,539,628
- Issue date Apr 1, 2003
- Calsonic Kansei Corporation
- Tomoaki Akutsu
- F28 - HEAT EXCHANGE IN GENERAL
Information Patent Grant
Formed strip and roll forming
- Patent number 6,423,423
- Issue date Jul 23, 2002
- Calsonic Kansei Corporation
- Tomoaki Akutsu
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Cutting apparatus for roll-formed product of roll-forming unit
- Patent number 6,418,614
- Issue date Jul 16, 2002
- Calsonic Kansei Corporation
- Tomoaki Akutsu
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents

Information Patent Application
Formed strip and roll forming
- Publication number 20020134126
- Publication date Sep 26, 2002
- CALSONIC KANSEI CORPORATION
- Tomoaki Akutsu
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
Formed strip and roll forming
- Publication number 20020136918
- Publication date Sep 26, 2002
- CALSONIC KANSEI CORPORATION
- Tomoaki Akutsu
- F28 - HEAT EXCHANGE IN GENERAL
Information Patent Application
FORMED STRIP AND ROLL FORMING
- Publication number 20010053457
- Publication date Dec 20, 2001
- TOMOAKI AKUTSU
- F28 - HEAT EXCHANGE IN GENERAL
Information Patent Application
CUTTING APPARATUS FOR ROLL-FORMED PRODUCT OF ROLL-FORMING UNIT
- Publication number 20010049870
- Publication date Dec 13, 2001
- TOMOAKI AKUTSU
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC