Issued Patents All Time
Showing 26–33 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5669295 | Calender for treating both sides of a paper web | Rolf van Haag, Ulrich Rothfuss | 1997-09-23 |
| 5655444 | Calender for webs of paper | Rolf van Haag | 1997-08-12 |
| 5655442 | Calender for the treatment of a paper web | Hans-Rolf Conrad | 1997-08-12 |
| 5571066 | Heatable roll for calendering or smoothing systems | — | 1996-11-05 |
| 5477659 | Method and arrangement for the packaging of a material-web roll | Hans-Rolf Conrad | 1995-12-26 |
| 5042373 | Guard for the nips of rolls in calenders and like machines | Hilmar Fenzau, Jurgen Schlunke, Hartmut Wilke | 1991-08-27 |
| 5029521 | Calender and method of operating the same | Josef Pav, Gerhard Hartwich, Rolf van Haag | 1991-07-09 |
| 4290351 | Method and apparatus for rapidly separating the rolls of a calender | Josef Pav, Axel Kemna | 1981-09-22 |