Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4939374 | Irradiation device | — | 1990-07-03 |
| 4872266 | Plastic frame with embedded shearing foil | Ruedi Gasser | 1989-10-10 |
| 4740303 | Metal filter foil | Ruedi Gasser | 1988-04-26 |
| D289726 | Combined coffee making filter and drip stand | — | 1987-05-12 |
| 4619048 | Method for forming composite part comprising a plastic frame and a perforated metal foil | — | 1986-10-28 |
| 4476776 | Centrifuge cage for a coffee centrifuge | Ruedy Gasser | 1984-10-16 |
| 4374026 | Basket filter | — | 1983-02-15 |
| 4287066 | Sieve having substantially plane sieve sheets and a method for its manufacture | Ernst Stumvoll | 1981-09-01 |
| 4259283 | Manufacture of a sieve having substantially plane sieve sheets | Ernst Stumvoll | 1981-03-31 |
| 4256585 | Coffee filter with drip tray | — | 1981-03-17 |
| 4255265 | Reusable coffee filter | — | 1981-03-10 |
| 4231876 | Reusable coffee filter | Anton Zimmermann | 1980-11-04 |