Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11525314 | Polished rod elevators, and related methods of use | Alan D Voth | 2022-12-13 |
| 5098667 | Particulate flow control | Pat Rooney | 1992-03-24 |
| 4834874 | Removal of liquid from a liquid-solids mixture | William R. Anthoney, Brian H. Limoges | 1989-05-30 |
| 4787440 | Spiral flow in a shell and tube heat exchanger | — | 1988-11-29 |
| 4778605 | Method for removing liquid from a liquid-solids mixture | William R. Anthoney, Brian H. Limoges | 1988-10-18 |
| 4739927 | Catalytic cracking unit | George E. Hays, Richard H. Nielsen | 1988-04-26 |
| 4697637 | Tube support and flow director | — | 1987-10-06 |
| 4563334 | Catalytic cracking unit | George E. Hays, Richard H. Nielsen | 1986-01-07 |
| 4539940 | Tube and shell heat exchanger with annular distributor | — | 1985-09-10 |
| 4289198 | Heat exchanger | — | 1981-09-15 |