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Mohamed Tohfa
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Duisburg, DE
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Patents Grants
last 30 patents
Information
Patent Grant
Method and device for the coreless forming of hollow profiles
Patent number
8,959,973
Issue date
Feb 24, 2015
Thyssenkrupp Steel AG
Torsten Bröβke
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Grant
Device for manufacturing profiles
Patent number
8,276,428
Issue date
Oct 2, 2012
ThyssenKrupp Steel Europe AG
Michael Brüggenbrock
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Grant
Method and apparatus for the production of a longitudinal seam weld...
Patent number
8,042,368
Issue date
Oct 25, 2011
Thyssenkrupp Steel AG
Michael Brüggenbrock
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Grant
Device for producing a longitudinally welded hollow profile using a...
Patent number
7,909,226
Issue date
Mar 22, 2011
Thyssenkrupp Steel AG
Michael Brüggenbrock
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Patents Applications
last 30 patents
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Patent Application
Device for Manufacturing Profiles
Publication number
20100251795
Publication date
Oct 7, 2010
ThyssenKrupp Steel Europe AG
Michael Brüggenbrock
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Application
Method and device for producing a longitudinally welded hollow profile
Publication number
20090114703
Publication date
May 7, 2009
THYSSENKRUPP STEEL AG
Michael Bruggenbrock
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Application
Method and device for the coreless forming of hollow profiles
Publication number
20090044394
Publication date
Feb 19, 2009
THYSSENKRUPP STEEL AG
Torsten Brösske
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...