| Patents for C01D 7 - Carbonates of sodium, potassium, or alkali metals in general (1,753) |
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| 04/03/1979 | US4147599 Production of alkali metal carbonates in a cell having a carboxyl membrane |
| 02/27/1979 | CA1049555A1 Process for recovering methionine and potassium from recycled solutions of the potassium carbonate-methionine process |
| 11/07/1978 | CA1041708A1 Separating sulphur in the form of hydrogen sulphide from clarified green liquor |
| 09/19/1978 | US4115525 Carbon dioxide, wegscheider's salt |
| 08/01/1978 | US4104033 Polyoxyethylene glycol or ethylene oxide-propylene oxide copolymer |
| 07/11/1978 | US4100253 Recovery of sodium and antimony values from spent ethylene glycol residues |
| 06/06/1978 | US4093508 Process for recovering chemicals from the waste liquors of sulfate cellulose digestion and the waste waters of bleaching |
| 05/09/1978 | US4088451 Concentration of underground brines in situ by solar evaporation |
| 04/11/1978 | US4083939 Use of tributoxyethylphosphate to control foam in the production of soda ash from trona |
| 04/11/1978 | US4083930 Method of treating alkali metal sulfide and carbonate mixtures |
| 03/14/1978 | US4079119 Sulfur dioxide removal process |
| 02/21/1978 | US4075281 Adsorption on activated carbon |
| 01/24/1978 | US4070445 Reduction of aqueous thiosulfate solutions |
| 01/03/1978 | US4066416 Carbonating tower for producing sodium bicarbonate magma |
| 12/06/1977 | US4061718 Method for the recovery of ammonia from liquor from the filters of ammonia-soda plants |
| 09/20/1977 | US4049787 Process for separating sulphur in the form of hydrogen sulphide from clarified green liquor obtained from the combustion of waste liquor |
| 08/23/1977 | US4044115 Production of alumina monohydrate from aluminum nitrate solutions |
| 08/23/1977 | US4044097 Recovery of soda values from sodium carbonate crystallizer purge liquors |
| 08/02/1977 | US4039618 Treatment of sodium carbonate crystallizer mother liquors |
| 08/02/1977 | US4039617 Recovery of soda values and heat from sodium carbonate crystallizer purge liquors |
| 07/12/1977 | US4035228 From pulping process |
| 06/28/1977 | US4032616 Continuous process, multistage, multizonal, carbon dioxide treatment |
| 05/10/1977 | US4022871 Carboamoniac attack |
| 05/10/1977 | US4022868 Trona calcination |
| 05/10/1977 | US4022867 Soluble silicate reduction in sodium carbonate crystallizer mother liquors |
| 05/03/1977 | US4021527 Production of sodium carbonate |
| 05/03/1977 | US4021526 Soluble silicate reduction in calcined trona liquors |
| 05/03/1977 | US4021525 Sodium carbonate |
| 04/26/1977 | US4019872 Producing sodium carbonate monohydrate from carbonate solution including addition of aluminum ions |
| 04/19/1977 | US4018876 Process for the production of metal oxalates and soda ash |
| 04/19/1977 | US4017952 Method for disassembling and repairing a sodium-handling apparatus |
| 03/01/1977 | US4010243 Preparation for potassium bicarbonate from potassium halide |
| 02/01/1977 | US4005987 Iron sulfate |
| 01/04/1977 | US4001381 Manufacturing process for heavy sodium carbonates in briquette form |
| 11/09/1976 | US3991160 Recovery of soda values from sodium carbonate crystallizer purge liquors |
| 10/05/1976 | US3984527 Wegscheider's salt |
| 09/21/1976 | US3981686 Cationic flocculant |
| 09/14/1976 | US3980754 Purification of alkali carbonate containing a fluorine compound |
| 08/17/1976 | US3975503 Method for producing alkali carbonate |
| 08/17/1976 | US3975499 Magnesium ions, sodium dodecylbenzenesulfonate |
| 07/27/1976 | US3971631 Pelletizing alkali metal polysilicates |
| 07/13/1976 | US3969488 From sodium aluminate and carbon dioxide |
| 06/29/1976 | US3966541 Concentration of underground brines in situ by solar evaporation |
| 06/08/1976 | US3962403 Color differentiation |
| 05/11/1976 | US3956457 Preparation of sodium carbonate monohydrate |
| 05/04/1976 | US3954410 Solvents for NMR spectroscopy |
| 04/06/1976 | US3949052 Process for the treatment of carburizing salt wastes |
| 03/30/1976 | US3946804 Plate heat exchanger |
| 03/16/1976 | US3944500 Production of low bulk density product from sodium bicarbonate |
| 03/16/1976 | US3944474 Electrolyzing sodium chloride to caustic brine, carbonation |
| 02/10/1976 | US3937732 Oxamide by hydrolysis of cyanogen |
| 01/20/1976 | US3933977 Process for producing sodium carbonate |
| 01/13/1976 | US3932587 Absorption of sulfur oxides from flue gas |