Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11299878 | Vacuum sewage system with sump breather apparatus | Troy E. Blocher | 2022-04-12 |
| 10001787 | Controller for vacuum sewage system | Troy E. Blocher | 2018-06-19 |
| 9523449 | Pipe coupling | Troy E. Blocher | 2016-12-20 |
| 6397874 | Dual backflow check valve | Burton Addison Featheringill | 2002-06-04 |
| 5570715 | Sump-vented controller mechanism for vacuum sewerage transport system | Burton Addison Featheringill | 1996-11-05 |
| 5515554 | Vacuum toilet system | Christopher J. Clear | 1996-05-14 |
| 5326069 | Vacuum toilet system and discharge valve thereof | Christopher J. Clear | 1994-07-05 |
| 5282281 | Portable vacuum toilet system | Christopher J. Clear, Blake V. Ricks | 1994-02-01 |
| 5259427 | Package system for collection-transport of waste liquids | Blake V. Ricks | 1993-11-09 |
| 5082238 | Nonjamming vacuum valve having tapered plunger | Mark Andrew Jones | 1992-01-21 |
| 5078174 | Vacuum sewerage system having non-jamming vacuum valves with tapered plungers | Mark Andrew Jones | 1992-01-07 |
| 5064314 | Vacuum sewerage system with increased lift capabilities having electric air admission controllers | Mark Andrew Jones | 1991-11-12 |
| 5044836 | Electric air admission controller | — | 1991-09-03 |
| 4917143 | Inlet vacuum valve with quick-release mounting apparatus for unit controller | — | 1990-04-17 |
| 4691731 | Vacuum sewerage system with in pit breather | Mark Andrew Jones | 1987-09-08 |
| 4373838 | Vacuum sewage transport system | Brian E. Foreman | 1983-02-15 |