Chigaya Sekine

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Assembly of sheet materials, tube assembly, drawing method and tool...
- Patent number 8,141,227
- Issue date Mar 27, 2012
- Kabushiki Kaisha Hitachi Seisakusho
- Makoto Nishimura
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...

Patents Applicationslast 30 patents

Information Patent Application
Assembly of sheet materials, tube assembly, drawing method and tool...
- Publication number 20090007409
- Publication date Jan 8, 2009
- Makoto Nishimura
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
Assembly of sheet materials, tube assembly, drawing method and tool...
- Publication number 20040168297
- Publication date Sep 2, 2004
- Makoto Nishimura
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...