Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9003850 | Boundary layer improvement of plate springs or undulating springs | Bernfried Hesselmann, Sven Roth, Peter Buchner, Thomas Muhr | 2015-04-14 |
| 8056984 | Head rest carrying element | Stephan Hentschel, Peter Finge, Georg Mintkewitz | 2011-11-15 |
| 7810433 | Device for the assembly and disassembly of a fastening device, more preferably a rail fastening device on a support body | Nicole Kumpfmüller, Harald Mauer, Dieter Mrosowski, Karsten Westerhoff | 2010-10-12 |
| 7793857 | Fixing means for fixing railway lines to sleepers or stretches of track | Karsten Westerhoff, Jörg Dieter Brecht, Erik Danneberg, Bernfried Hesselmann, Vladimir Kobelev +1 more | 2010-09-14 |
| 7465138 | Undulating washer or wave-shaped spring with a defined progressive characteristic spring rate | Alexander Heim | 2008-12-16 |
| 7334784 | Corrugated spring with gradual progressive spring characteristic | Vladimir Kobelev, Bernfried Hesselmann | 2008-02-26 |
| 7192015 | Plate spring with improved settlement behavior | Thomas Muhr, Bernfried Hesselmann, Volker Schütz, Harold Brenner | 2007-03-20 |