Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5368818 | Monitoring and control system for selective regeneration of alkanolamine from cation ion exchange resin with sodium hydroxide | Arthur L. Cummings, Alfred E. Keller | 1994-11-29 |
| 5190662 | Removal of iron sulfide particles from alkanolamine solutions | Alfred E. Keller, Arthur L. Cummings, James C. Thompsen, Regina A. Severson | 1993-03-02 |
| 5162084 | Process for monitoring and controlling an alkanolamine reaction process | Arthur L. Cummings, Alfred E. Keller, James C. Thompsen, Regina A. Severson | 1992-11-10 |
| 5006258 | Regeneration of acidic cationic exchange resin used in the reactivation of spent alkanolamine | Alfred E. Keller | 1991-04-09 |
| 4473465 | Eliminating foaming in hydrocarbon distillations | D. D. Orrell | 1984-09-25 |