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Recovery of soda values from sodium carbonate crystallizer purge liquors
Patent #: 3991160
Issued on: 11/09/1976
Inventor: Gancy , et al.
Soluble silicate reduction in sodium carbonate crystallizer mother liquors
Patent #: 4022867
Issued on: 05/10/1977
Inventor: Gancy , et al.
Recovery of soda values and heat from sodium carbonate crystallizer purge liquors
Patent #: 4039617
Issued on: 08/02/1977
Inventor: Kuo
Recovery of soda values from sodium carbonate crystallizer purge liquors
Patent #: 4044097
Issued on: 08/23/1977
Inventor: Gancy , et al.
Multi-stage crystallization of sodium carbonate
Patent #: 4160812
Issued on: 07/10/1979
Inventor: Conroy , et al.
Dehydration process
Patent #: 4179493
Issued on: 12/18/1979
Inventor: Sadan
Process for the separation of insoluble materials in the production of soda ash
Patent #: 4202667
Issued on: 05/13/1980
Inventor: Conroy , et al.
Recovery of alkali values from sodium bicarbonate-containing ore with ammonia
Patent #: 4283372
Issued on: 08/11/1981
Inventor: Frint , et al.
Double crystallization process to produce low organic, low silica soda ash
Patent #: 4286967
Issued on: 09/01/1981
Inventor: Booth, Jr. , et al.
Recovery of alkali values from trona deposits
Patent #: 4344650
Issued on: 08/17/1982
Inventor: Pinsky , et al.
Recovery of alkali values from salt-containing trona deposits
Patent #: 4401635
Issued on: 08/30/1983
Inventor: Frint
Process for producing anhydrous sodium carbonate crystal
Patent #: 4405592
Issued on: 09/20/1983
Inventor: Nakaya , et al.
Enhanced recovery of soda ash from aqueous sodium carbonate solutions containing Na2 SO4 - and NaCl
Patent #: 4519806
Issued on: 05/28/1985
Inventor: Copenhafer , et al.
Production of soda ash from nahcolite
Patent #: 4557910
Issued on: 12/10/1985
Inventor: Meadow
Process for the recovery of sodium carbonate from salt mixtures
Patent #: 4564508
Issued on: 01/14/1986
Inventor: Fairweather , et al.
Process for recovering sodium carbonate from trona and other mixtures of sodium carbonate and sodium bicarbonate
Patent #: 4584077
Issued on: 04/22/1986
Inventor: Chlanda , et al.
Solution mining of sodium minerals with acids generated by electrodialytic water splitting
Patent #: 4636289
Issued on: 01/13/1987
Inventor: Mani , et al.
Solution mining of trona or nahcolite ore with electrodialytically-produced aqueous sodium hydroxide
Patent #: 4652054
Issued on: 03/24/1987
Inventor: Copenhafer , et al.
Production of sodium bicarbonate by reversion of soda-type feed salt
Patent #: 4654204
Issued on: 03/31/1987
Inventor: Copenhafer , et al.
Soda ash manufacture
Patent #: 4814151
Issued on: 03/21/1989
Inventor: Benke
Recovery of sodium carbonate values from contaminated dilute soda ash streams
Patent #: 4869882
Issued on: 09/26/1989
Inventor: Dome , et al.
Soda ash production
Patent #: 5043149
Issued on: 08/27/1991
Inventor: Frint, et al.
Dry detergent compositions
Patent #: 5198145
Issued on: 03/30/1993
Inventor: Lobunez, et al.
Soda ash production
Patent #: 5238664
Issued on: 08/24/1993
Inventor: Frint, et al.
Process for producing sodium salts from brines of sodium ores
Patent #: 5262134
Issued on: 11/16/1993
Inventor: Frint, et al.
Process for producing sodium carbonate, sodium bicarbonate and associated compounds
Patent #: 5270023
Issued on: 12/14/1993
Inventor: May, et al.
Process for producing sodium salts from brines of sodium ores Patent #: 5283054
Issued on: 02/01/1994
Inventor: Copenhafer, et al.
May 10, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
