| 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 |