Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12378177 | Reducing energy consumption in MEG reclamation | David John Knight, Bryan A. Bussell | 2025-08-05 |
| 11897833 | Removing organic acids in monoethylene glycol recovery | — | 2024-02-13 |
| 11325878 | Removing organic acids in monoethylene glycol recovery | — | 2022-05-10 |
| 10144686 | System and method to remove organic acid from a rich MEG stream by stripping | David John Knight | 2018-12-04 |
| 9732019 | System and method to remove organic acid from a rich MEG stream by stripping | David John Knight | 2017-08-15 |
| 5328445 | Inflatable foot cushion | James G. Spahn | 1994-07-12 |
| 5265293 | Inflatable body support | James G. Spahn | 1993-11-30 |
| 5111807 | Back belt | James G. Spahn, Michael L. Jacobs | 1992-05-12 |
| 4887715 | Surgical gauze sponge manager | James G. Spahn, Michael L. Jacobs | 1989-12-19 |