Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7401450 | Infusion bags, especially for tea, and a method of closing an infusion bag with a string | Stefan Lambertz, Manfred Hauers, Dieter Vits | 2008-07-22 |
| 6746699 | Infusion bag with string | Stefan Lambertz, Manfred Hauers, Dieter Vits | 2004-06-08 |
| 6733804 | Multi-chambered infusion bag, especially for tea | Wolfgang Groth | 2004-05-11 |
| 6725628 | Process for the continuous production of beverage filter bags | Stefan Lambertz, Wolfgang Groth, Rolf Maier | 2004-04-27 |
| 6675553 | Method and device for stacking and packing infusion bags | Stefan Lambertz, Wolfgang Groth | 2004-01-13 |