Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8635847 | Apparatus and a system for twisting a string of wrapped and spun tobacco leaves | — | 2014-01-28 |
| 6682683 | Method for manufacturing an accordion filter insert | Udo Michaelis, Dieter Linse | 2004-01-27 |
| 6179891 | Filter arrangement and a method for its manufacture | Wolfgang Schmidt | 2001-01-30 |
| 6165403 | Method for the manufacture of a filter cartridge | Udo Michaelis | 2000-12-26 |
| 6162272 | Accordion filter insert having an elastic sealing lip unitary with a frame of a filter element | Udo Michaelis, Dieter Linse | 2000-12-19 |
| 6059966 | Cartridge filter with frame | Andreas Brandhofer, Matthias Schuster, Hans-Joachim Lippold, Margit Hofmann | 2000-05-09 |
| 6045600 | Filter cartridge and a method for its manufacture | Udo Michaelis | 2000-04-04 |
| 6027542 | Filter cartridge | Andreas Brandhofer, Thomas Schroth, Wolfgang Schmidt | 2000-02-22 |
| 5958097 | Filter insert | Ulrich Schlor, Udo Michaelis | 1999-09-28 |
| 5863482 | Method for manufacturing a filter insert | Ulrich Schlor, Udo Michaelis | 1999-01-26 |