Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5424285 | Method for reducing deleterious environmental impact of subterranean fracturing processes | Alan L. Stacy | 1995-06-13 |
| 4917832 | Air lift diffuser | Thomas J. Marcum, Troy W. Fieselman | 1990-04-17 |
| 4762796 | pH control of a process stream | Loren H. Haag | 1988-08-09 |
| 4557879 | Gas diffuser with indefinite life and mixed bubble size capacity | — | 1985-12-10 |
| 4521349 | Fluid diffuser for gases and liquids | George Michael Wilfley | 1985-06-04 |
| 4451155 | Mixing device | George Michael Wilfley | 1984-05-29 |