Manfred Bellmann

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Breitscheid, DE

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Patents Grantslast 30 patents

Information Patent Grant
Method for producing seamless tubes by means of a three-roll bar ro...
- Patent number 9,056,341
- Issue date Jun 16, 2015
- V & M Deutschland GmbH
- Rolf Kümmerling
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Method and apparatus for manufacturing medium-walled and thin-walle...
- Patent number 5,115,656
- Issue date May 26, 1992
- Mannesmann Aktiengesellschaft
- Rolf Kummerling
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Making seamless pipes, over 200 mm in diameter
- Patent number 4,848,124
- Issue date Jul 18, 1989
- Mannesmann AG
- Horst Biller
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Operating a rolling mill working on seamless tubing
- Patent number 4,404,832
- Issue date Sep 20, 1983
- Mannesmann Aktiengesellschaft
- Gerd Pfeiffer
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...

Patents Applicationslast 30 patents

Information Patent Application
METHOD FOR PRODUCING SEAMLESS TUBES BY MEANS OF A THREE-ROLL BAR RO...
- Publication number 20120125068
- Publication date May 24, 2012
- V & M DEUTSCHLAND GMBH
- Rolf Kümmerling
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...