Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5989505 | Method for recovery of alkali values from trona using air stripping | James D. Phillip, David S. Luzmoor | 1999-11-23 |
| 5976485 | Sodium metabisulfite process | Jim P. Metziner, David M. Hansen | 1999-11-02 |
| 5753200 | Sodium metabisulfite process | Jim P. Metziner, David M. Hansen | 1998-05-19 |
| 5624647 | Method for recovery of alkali values from trona using two-stage leaching | David R. Delling, Robert N. Skogley, Francis M. Coustry | 1997-04-29 |
| 5618504 | Method for recovery of alkali values from trona using sequential crystallization | David R. Delling, Francis M. Coustry, Kevin L. Green | 1997-04-08 |
| 5219541 | Sodium hydroxide production with a calcium carbonate seed crystal | — | 1993-06-15 |