Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8858902 | Selective removal of sulfide from aqueous alkali solutions | — | 2014-10-14 |
| 8454840 | Selective removal of sulfide from aqueous alkali solutions | — | 2013-06-04 |
| 7998446 | Flue gas desulfurization process utilizing hydrogen peroxide | Henry A. Pfeffer | 2011-08-16 |
| 7638109 | Production of sodium sesquicarbonate and sodium carbonate monohydrate | — | 2009-12-29 |
| 7018594 | Crystallization of sodium carbonate decahydrate from liquors supersaturated in sodium bicarbonate | — | 2006-03-28 |
| 6576206 | Bicarbonate conversion in a carbonate monohydrate process | Thomas H. Neuman | 2003-06-10 |
| 6428759 | Production of feed liquors for sodium carbonate crystallization processes | David E. Smith, Richard W. Chastain | 2002-08-06 |
| 6228335 | Process for the production of sodium carbonate crystals | David E. Smith | 2001-05-08 |
| 6022516 | Method of reducing the formation of scale in the production of soda ash from trona and nahcolite ores | Edward Maleskas | 2000-02-08 |
| 5283054 | Process for producing sodium salts from brines of sodium ores | David E. Smith, Gerald Niedringhaus | 1994-02-01 |
| 5262134 | Process for producing sodium salts from brines of sodium ores | William R. Frint | 1993-11-16 |
| 5194176 | Peroxygen laundry bleach | Basil A. Guiliano, William A. Hills, Charles V. Juekle, Stephen Tomko | 1993-03-16 |
| 4729881 | Hydrometallurgical process for the production of beryllium | — | 1988-03-08 |
| 4654204 | Production of sodium bicarbonate by reversion of soda-type feed salt | Henry A. Pfeffer, Francis Rauh | 1987-03-31 |
| 4652054 | Solution mining of trona or nahcolite ore with electrodialytically-produced aqueous sodium hydroxide | Henry A. Pfeffer | 1987-03-24 |
| 4588569 | Dry injection flue gas desulfurization process using absorptive soda ash sorbent | Michael J. Cyran | 1986-05-13 |
| 4519806 | Enhanced recovery of soda ash from aqueous sodium carbonate solutions containing Na.sub.2 SO.sub.4 - and NaCl | Michael L. Pinsky | 1985-05-28 |
| 4288419 | Enhanced recovery of sodium carbonate from NaCl-containing sodium carbonate solutions | Francis Rauh | 1981-09-08 |
| 4283372 | Recovery of alkali values from sodium bicarbonate-containing ore with ammonia | William R. Frint, Michael L. Pinsky | 1981-08-11 |