Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6561344 | Belt, especially conveyer belt and method for manufacturing same | — | 2003-05-13 |
| 5997972 | Filling material for percolating filters for the treatment of fluids and process for the production of same | — | 1999-12-07 |
| 5882510 | Contact filter block of joined tube sections | Hans-Joachim Bittner | 1999-03-16 |
| 5772870 | Tower packing block and method for manufacturing the same | — | 1998-06-30 |
| 5693383 | Packing material | Hans Kruse | 1997-12-02 |
| 5643118 | Belt | — | 1997-07-01 |
| 5436052 | Net, especially a spacing net or surface protection net | Hans-Joachim Bittner | 1995-07-25 |
| 5225116 | Contact body for cooling towers | Knut Menzel | 1993-07-06 |
| 5160395 | Method of manufacturing biological water treatment contact material | Jurgen Wittek | 1992-11-03 |
| 5104716 | Contact material | Jurgen Wittek | 1992-04-14 |
| 4985182 | Packing element | Jurgen Wittek | 1991-01-15 |
| 4929484 | Filling material for percolating filters for the treatment of liquids and process for producing and assembling it | — | 1990-05-29 |