Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5262134 | Process for producing sodium salts from brines of sodium ores | William C. Copenhafer | 1993-11-16 |
| 5238664 | Soda ash production | Michael M. Bithell, William G. Fischer | 1993-08-24 |
| 5192164 | Soda ash production | Michael M. Bithell, William G. Fischer | 1993-03-09 |
| 5043149 | Soda ash production | Michael M. Bithell, William G. Fischer | 1991-08-27 |
| 4401635 | Recovery of alkali values from salt-containing trona deposits | — | 1983-08-30 |
| 4299799 | Carbon treatment of monohydrate crystallizer liquor | Joseph M. Ilardi, Richard W. Waggener | 1981-11-10 |
| 4283372 | Recovery of alkali values from sodium bicarbonate-containing ore with ammonia | William C. Copenhafer, Michael L. Pinsky | 1981-08-11 |