Issued Patents All Time
Showing 1–22 of 22 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12378975 | Pneumatic fluid pump with dual rotational swirling cleaning action | Joseph Lawrence Schaffer, Mark T. Weinberger, Daniel P. Ross, Brett M. Crouse, Steven R. Wells | 2025-08-05 |
| 12097542 | Fluid pump having self-cleaning structure | Donald Lee Schultz, Matthew Thomas McKeown | 2024-09-24 |
| 11692433 | Fluid level monitoring system and method incorporating pressure sensor system having inflatable/collapsible bag | William C. Allen | 2023-07-04 |
| 11603866 | Landfill well pump | Steven R. Wells | 2023-03-14 |
| 11560786 | Liquid level sensor system | David Fischer, Leonard Felton Stevens-Moman, William C. Allen | 2023-01-24 |
| 11529658 | Fluid pump having self-cleaning air inlet structure | Donald Lee Schultz, Matthew Thomas McKeown | 2022-12-20 |
| 11448238 | Pneumatic landfill pump cycle counter | Steven R. Wells, William C. Allen, Matthew Thomas McKeown, Mark T. Weinberger, David Fischer +1 more | 2022-09-20 |
| 11408274 | Fluid level monitoring system and method incorporating pressure sensor system having inflatable/collapsible bag | William C. Allen | 2022-08-09 |
| 11261883 | Self-cleaning pneumatic fluid pump having poppet valve with propeller-like cleaning structure | Donald Lee Schultz, Bradley PEAKE | 2022-03-01 |
| 8888018 | Powder gun deflector | Kui-Chui Kwok | 2014-11-18 |
| 8371517 | Powder gun deflector | Kui-Chiu Kwok | 2013-02-12 |
| 8225968 | Seal system for gear pumps | Martin J. Selmek | 2012-07-24 |
| 7918409 | Multiple charging electrode | Austin A. Saylor | 2011-04-05 |
| 7168678 | Needle valve construction | Austin A. Saylor | 2007-01-30 |
| 7128277 | Powder bell with secondary charging electrode | — | 2006-10-31 |
| 6889921 | Bell cup skirt | — | 2005-05-10 |
| 6793150 | Bell cup post | David M. Seitz | 2004-09-21 |
| D396730 | Air hose fitting | — | 1998-08-04 |
| RE35769 | Spray gun having trigger overtravel protection and maximum flow adjustment knob warning | Thomas E. Grime, Roger T. Cedoz, Roger D. Wheeler | 1998-04-14 |
| 5364033 | Seal for spray gun | Roger T. Cedoz | 1994-11-15 |
| 5332159 | Spray gun with dual mode trigger | Thomas E. Grime, James P. Baltz, Roger T. Cedoz | 1994-07-26 |
| 5289974 | Spray gun having trigger overtravel protection and maximum flow adjustment knob warning | Thomas E. Grime, Roger T. Cedoz, Roger D. Wheeler | 1994-03-01 |