Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6447574 | System, process and apparatus for removal of pollutants from gaseous streams | James L. Frier, Thomas K. Ewan | 2002-09-10 |
| 4272499 | Process and apparatus for the removal of particulate matter and reactive or water soluble gases from carrier gases | Robert W. Cason, Orvis L. Holland, Floyd C. Russell, James L. Frier | 1981-06-09 |