Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7481754 | Roll | Jurgen Kruger, Wolfgang Wiertz, Berthold Krämer, Ludwig Hellenthal | 2009-01-27 |
| 7174949 | Heatable calender roll | Ludwig Hellenthal, Berthold Krämer, Wolfgang Krönert, Walter Patt, Joachim Schonemann +1 more | 2007-02-13 |
| 7018512 | Roll, in particular, calender roll | Jaxa von Schweinichen, Wolfgang Wiertz, Ludwig Hellenthal | 2006-03-28 |
| 5935614 | Apparatus for die casting three-layer articles | Mich.ae butted.l Blank | 1999-08-10 |
| 5894023 | Apparatus for injection-molding three-layer moldings | Michael G. Blank | 1999-04-13 |
| 5370177 | Controllable-temperature roll | Gustav Fey, Ludwig Hellenthal, Berthold Krämer, Walter Patt, Jaxa von Schweinichen | 1994-12-06 |
| 4581068 | Shaped body for feeding cupola furnaces | — | 1986-04-08 |
| 4231798 | Alloy carrier for charging cupola furnaces | Hans J. Schramm | 1980-11-04 |