Christian Leppin

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Schaffhausen, CH

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Patents Grantslast 30 patents

Information Patent Grant
Method for shaping an initial profile or a similar workpiece using...
- Patent number 6,881,494
- Issue date Apr 19, 2005
- Alcan Technolgy & Management Ltd.
- Markus Gehrig
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
High internal pressure forming process
- Patent number 6,834,522
- Issue date Dec 28, 2004
- Alcan Technology & Management Ltd.
- Christian Leppin
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Method for forming an initial profile or a tool of the kind and a p...
- Patent number 6,810,705
- Issue date Nov 2, 2004
- Alcan Technology & Management AG
- Christian Leppin
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Method for shaping an initial profile or a similar workpiece using...
- Patent number 6,763,693
- Issue date Jul 20, 2004
- Alcan Technology & Management Ltd.
- Markus Gehrig
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...

Patents Applicationslast 30 patents

Information Patent Application
Bumper system
- Publication number 20050104392
- Publication date May 19, 2005
- Alcan Technology & Management Ltd.
- Oliver Liebhard
- B60 - VEHICLES IN GENERAL
Information Patent Application
Method for shaping a bent single- or multiple-chamber hollow profil...
- Publication number 20050097935
- Publication date May 12, 2005
- Markus Gehrig
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
Method for shaping an initial profile or a similar workpiece using...
- Publication number 20040048013
- Publication date Mar 11, 2004
- Alusuisse Technology & Management AG
- Markus Gehrig
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
High internal pressure forming process
- Publication number 20030133810
- Publication date Jul 17, 2003
- Alcan Technology & Management Ltd.
- Christian Leppin
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...