Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7250109 | Back-wash filter | Heinz Sindorf, Willi Rott | 2007-07-31 |
| 6890434 | Backflush filter, in particular for filtering lubricant oil | Willi Rott, Wilhelm Vieten, Heinz Sindorf, Sivagnanam Kandiah | 2005-05-10 |
| 6872310 | Precoated filter for the filtration of flowing media | Birgit Trotzki, Sivagnanam Kandiah, Stefan Schmitz | 2005-03-29 |
| 4804481 | Helical spring apparatus and process for detaching filter cake | — | 1989-02-14 |
| 4518501 | Flush-back filter | Willi Rott, Heinz Sindorf | 1985-05-21 |
| 4517086 | Tubular filter apparatus | Ingo Romey | 1985-05-14 |
| 4415448 | Flush-back filter | Joachim Gutermuth | 1983-11-15 |
| 4265771 | Alluvial filter candle apparatus and a method of cleaning the same | Ingo Romey | 1981-05-05 |
| 4256583 | Flush-back filter | — | 1981-03-17 |