Issued Patents All Time
Showing 76–77 of 77 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5306337 | Alginate impression compositions | Jens Winkel, Reiner Voigt | 1994-04-26 |
| 4842915 | Tufting base for carpets made of a spunbonded fabric, a method of manufacturing the base, and a tufting carpet | Ludwig Hartmann, Engelbert Loecher, Ivo Ruzek | 1989-06-27 |