Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9291278 | Housing for a pressure-loaded component | Klemens Strauss, Martin Walther | 2016-03-22 |
| 8906233 | Ring grit remover with vanes | Harrison J. Messick, Francis M. Noonan | 2014-12-09 |
| 7971732 | Grit trap for waste water system | Robert Davis | 2011-07-05 |
| 7331769 | Pumping system | Robert Davis | 2008-02-19 |
| 6811697 | Apparatus and method for extracting particles from a fluid stream | Robert Davis, John K. Kelly | 2004-11-02 |
| 6668625 | Measurement of the level of settled particles within a fluid vessel | Robert Davis | 2003-12-30 |
| 6153099 | Biological waste treatment process and apparatus | Lindy Ty Cooper | 2000-11-28 |
| 6123507 | Single port impeller | — | 2000-09-26 |
| 5118415 | Oxidation ditch velocity control system | Lindy Ty Cooper | 1992-06-02 |
| 4861472 | Apparatus for filtration of a suspension | — | 1989-08-29 |
| 4767532 | Apparatus for removing grit | — | 1988-08-30 |
| 4661047 | Submersible pump guide rail arrangement | — | 1987-04-28 |
| 4614589 | Method and apparatus for biological aerobic wastewater treatment | — | 1986-09-30 |
| 4594153 | Sewage pumping station | — | 1986-06-10 |
| 4426293 | Method and apparatus for removing oil from water | Donald G. Mason | 1984-01-17 |
| 4311281 | Comminutor installation | — | 1982-01-19 |