Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8716730 | LED module having a platform with a central recession | Yanqi Wang, Hiroaki Kawaguchi | 2014-05-06 |
| 6080317 | Process and apparatus for the purification of waste water | Hubert Wienands | 2000-06-27 |
| 5927727 | Sealing element, particularly for shut-off and regulating valves, and process for its production | Hans-Peter Strelow | 1999-07-27 |
| 5888638 | Sealing element, particularly for shut-off and regulating valves, and process for its production | Werner Kleinhans, Veit Bechte | 1999-03-30 |
| 5362395 | Method and apparatus for biologically purifying sewage which is organically loaded with substances difficult to decompose biologically or not decomposable biologically | Wolfgang Dorau, Herbert Wienands, Robert Rautenbach, Rainer Mellis | 1994-11-08 |
| 5348042 | Ceramic-plate flow-control valve | Walter Grau | 1994-09-20 |
| 5172862 | Shower head | Bruno Heimann, Bernd Bischoff, Hans-Peter Strelow | 1992-12-22 |
| 5032785 | Arrangement for measuring an electrical power or energy | Halder Mathis, Theo Frutiger | 1991-07-16 |
| 5022631 | Flow-control and shutofff valve | Walter Grau | 1991-06-11 |
| 5014736 | Shut-off and control valve | Harald Korfgen, Heinz Hirsch, Vinzenz Grendel, Walter Grau | 1991-05-14 |