AG

Alfred Graff

MA Mannesmann Ag: 4 patents #114 of 1,341Top 9%
MA Mannesmannrohren-Werke Ag: 1 patents #6 of 31Top 20%
SG Salzgitter Mannesmann Line Pipe Gmbh: 1 patents #7 of 25Top 30%
VG V & M Deutschland Gmbh: 1 patents #7 of 34Top 25%
VG Vallourec Deutschland Gmbh: 1 patents #16 of 72Top 25%
Overall (All Time): #512,541 of 4,157,543Top 15%
10
Patents All Time

Issued Patents All Time

Showing 1–10 of 10 patents

Patent #TitleCo-InventorsDate
9322805 Leakage flux probe for non-destructive leakage flux-testing of bodies consisting of magnetisable material Ashraf Koka, Karsten Deegen, Axel Heinz 2016-04-26
8756999 Ultrasonic probe Gert Fischer, Karl-Heinz Breckel, Jochen Berkemeier 2014-06-24
8344725 Device for nondestructive testing of pipes Gert Fischer, Sven Gwildies, Michael Kaack, Ashraf Koka, Stefan Nitsche 2013-01-01
7861591 Device for the ultrasonic inspection of the weld seam of longitudinally welded pipes for defects Hans-Joachim Rath, Rainer Lücke 2011-01-04
6931931 Device for ultrasonic weld seam testing of longitudinally welded pipes for longitudinal and transversal errors Jürgen Verhoeven, Thomas Marcial Kersting, Ludwig Oesterlein 2005-08-23
6843131 Method of detecting discontinuities on elongated workpieces Friedhelm Schlawne 2005-01-18
5421203 Modifiable electrodynamic ultrasonic transducer Gert Fischer, Hans-Jurgen Rohde 1995-06-06
5164921 Electrodynamic permanent magnet transducer Hans-Jurgen Rohde 1992-11-17
5148414 Electrodynamic ultrasonic transducer Michael Wachter 1992-09-15
5050703 Electrodynamic transducer head Friedhelm Schlawne, Michael Wachter, Wolfgang Bottger 1991-09-24