Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12331758 | Grinder pump and cutting assemblies thereof | — | 2025-06-17 |
| 12326153 | Self cleaning cutter, cutting assembly, and pump | — | 2025-06-10 |
| 11629728 | Shaft seals and liquid pump comprising same | — | 2023-04-18 |
| 11339804 | Self-cleaning pump | David M. Williams, Brad Sawyer | 2022-05-24 |
| 10364821 | Grinder pump and cutting assembly thereof | — | 2019-07-30 |
| 10267312 | Liquid pump | — | 2019-04-23 |
| 10233940 | Shaft seals and liquid pump comprising same | — | 2019-03-19 |
| 9719515 | Liquid pump | — | 2017-08-01 |
| 9481991 | Macerating apparatus and method | David M. Williams, Matthew S. Heinsler | 2016-11-01 |
| 8888465 | Sewage handling system, cover, and controls | — | 2014-11-18 |
| 8769730 | Macerating apparatus and method | Matthew S. Heinsler | 2014-07-08 |
| 8714917 | Anti-airlock pump | Matthew S. Heinsler | 2014-05-06 |
| 8523532 | Sewage handling system, cover, and controls | — | 2013-09-03 |
| 8235316 | Macerating apparatus and method | Matthew S. Heinsler, David M. Williams | 2012-08-07 |
| 7563082 | Sewage handling system, cover, and controls | — | 2009-07-21 |
| 7537439 | Transfer pump | — | 2009-05-26 |
| 7520736 | Sewage handling system, cover, and controls | — | 2009-04-21 |
| D500770 | Sump pump | — | 2005-01-11 |
| 6430757 | Self-contained toilet basin | — | 2002-08-13 |