| Patents for C01C 1 - Ammonia; Compounds thereof (7,027) |
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| 07/22/1998 | CN1188137A Method and device for recovering transition and reaction heat from wall heat-exchanging type saturation tower |
| 07/22/1998 | CN1039203C Process for producing high strength and high active ammonia synthesised catalyst and smelting equipment thereof |
| 07/21/1998 | US5783374 Process for processing photographic baths from color processes |
| 07/16/1998 | CA2486907A1 Method of controlling polymer molecular weight and structure |
| 07/14/1998 | US5779988 Heterogeneous synthesis method and apparatus including wall temperature protection |
| 07/14/1998 | US5779945 Urea fertilizer |
| 07/01/1998 | EP0850878A1 Process and installation for the production of porous ammonium nitrate |
| 07/01/1998 | CN1186479A Point-of-use ammonia purification for electronic component manufacture |
| 07/01/1998 | CN1186452A Catalyst and process for preparing ammonia |
| 06/23/1998 | US5770771 Preparation of N-hydrocarbylthiophosphoric triamides |
| 06/04/1998 | WO1998023557A1 Process and apparatus for producing fertilizer from sulfur oxide-containing gas |
| 06/04/1998 | WO1998023536A1 Process for removing acids from lithium salt solutions |
| 06/03/1998 | CN1183380A Flow dividing process for ammonia or alcohol synthesis reaction system |
| 06/03/1998 | CN1183376A Steam reforming process |
| 05/27/1998 | CN1182636A Reactor, process and plant for manufacturing ammonium salts |
| 05/26/1998 | US5755934 Point-of-use ammonia purification for electronic component manufacture |
| 05/20/1998 | EP0842896A1 Reactor, process and apparatus for the production of ammonium salts |
| 05/20/1998 | CN1182050A Reforming apparatus |
| 05/14/1998 | DE19645835A1 Gas scrubbing method for removing nitrogen containing gases |
| 05/13/1998 | EP0841301A1 Reforming apparatus |
| 05/13/1998 | EP0840646A1 Catalyst and process for preparing ammonia |
| 05/13/1998 | EP0784595B1 Process for removing oxygen from ammonia at room temperature |
| 05/07/1998 | DE19735402A1 Low cost separation of ammonia from waste water |
| 05/05/1998 | US5746993 Process for manufacture of ultra-high purity ammonium hydroxide |
| 04/17/1998 | CA2188063A1 Catalytic oxidation of hydrogen sulfide (h2s) to ammonium sulfate (nh4)2so4) in ammoniacal (nh3) solutions |
| 04/15/1998 | EP0835168A1 On-site manufacture of ultra-high-purity nitric acid for semiconductor processing |
| 04/09/1998 | WO1998014400A1 Ammonia adsorption/desorption |
| 04/08/1998 | EP0834465A2 Steam reforming process |
| 04/08/1998 | EP0833799A1 Method for production of sodium bicarbonate, sodium carbonate and ammonium sulfate from sodium sulfate |
| 04/07/1998 | US5736116 Retrofit method involving installation of an air separation unit to supply oxygen and nitrogen streams |
| 04/01/1998 | EP0831978A1 On-site ammonia purification for semiconductor manufacture |
| 04/01/1998 | CN1177572A Method for production of high-purity iron oxide red by using ammonia-soda process |
| 03/25/1998 | EP0831079A1 Porous prilled ammonium nitrate |
| 03/25/1998 | EP0830316A1 Point-of-use ammonia purification for electronic component manufacture |
| 03/19/1998 | CA2215808A1 Porous prilled ammonium nitrate |
| 03/17/1998 | US5728359 Method for the preparation of sodium ammonium phosphate |
| 03/11/1998 | CN1175551A Method for whitening agricultural ammonium carbonate using chemcial additive |
| 03/04/1998 | CN1174813A Technology for producing pure alkali and ammonium chloride |
| 03/04/1998 | CN1037583C System for distribution of gas in catalyst beds and for support with minimum dimensions fo catalyst in reactors for heterogeneous synthesis |
| 03/03/1998 | US5723812 Propellant |
| 03/03/1998 | US5723097 Method of treating spent potliner material from aluminum reduction cells |
| 03/03/1998 | US5722442 On-site generation of ultra-high-purity buffered-HF for semiconductor processing |
| 02/26/1998 | WO1998007510A1 A method of catalytic reaction carried out near the optimal temperature |
| 02/25/1998 | CN1174169A Process for preparation of ammonia |
| 02/25/1998 | CN1174096A Improved catalytic reaction process at optimal temperature and synthesis reactor |
| 02/10/1998 | US5716588 Getter materials for deoxygenating ammonia/oxygen gas mixtures at low temperature |
| 02/04/1998 | CN1172148A Desulfurizing method for systhetic ammonia carbonization system |
| 02/04/1998 | CN1172070A Method for producing ammonium sulfate by using waste ammonia water |
| 02/03/1998 | US5714714 Process for preparing ammonium dinitramide |
| 01/28/1998 | CN1037167C Synthetic ammonia technique |
| 01/27/1998 | US5711926 Pressure swing adsorption system for ammonia synthesis |
| 01/22/1998 | WO1998002505A1 Minimizing evaporator scaling and recovery of salts during gasification |
| 01/21/1998 | CN1170698A Technology for producing potassium sulfate using flue gas desulfating gypsum |
| 12/17/1997 | CN1167650A Process for producing granules |
| 12/10/1997 | CN1167084A Technology for refining ammonia |
| 12/10/1997 | CN1167083A Technology for substituting high-pressure vapour by low-pressure vapour |
| 12/09/1997 | US5695616 Desulfurization, dinitrogenation |
| 12/03/1997 | CN1166453A Combiend production process of potassium carbonate and light magnesium carbonate |
| 11/26/1997 | CN1165783A High effective utilization of by-product solution containing ammonium sulphate |
| 11/26/1997 | CN1165781A Method for treatment of copper liquid entrained liquid of copper washing section in prodn. of synthetic ammonia |
| 11/19/1997 | EP0807607A1 Process for working up spent photographic processing baths |
| 11/19/1997 | EP0807606A1 Process for working up of photographic baths resulting from colour processing |
| 11/19/1997 | EP0807602A1 Process for the preparation of ammonia |
| 11/19/1997 | CN1165130A Method for preparing sulfonyl azophoska compound fertilizer |
| 11/13/1997 | DE19618971A1 Recovery of copper from residues from the Muller-Rochow process |
| 10/21/1997 | US5679315 Recovering silicon tetrafluoride-containing gas from acidulation of fluorine-containing phosphorus source, separating entrained liquid, converting to ammonium fluosilicate solution, separating impurities, ammoniating |
| 10/09/1997 | WO1997027157A3 Method for the preparation of sodium ammonium phosphate |
| 10/08/1997 | CN1036062C Process for producing ammonium sulphate by utilizing residual ammonia water |
| 10/01/1997 | CN1161031A Process for removing oxygen from ammonia at room temperature |
| 09/18/1997 | WO1997033828A1 Method for the manufacture of ammonia |
| 09/16/1997 | US5666812 Apparatus and process for renewing refrigerants |
| 09/11/1997 | DE19615063C1 Nitrogen recovery from liquid manure or agricultural effluent |
| 09/09/1997 | US5665323 Preparation of ammonium rare earth double oxalates and rare earth oxides produced therefrom |
| 09/03/1997 | CN1035759C Powdered ammonium nitrate fuel explosive and its preparing process |
| 09/02/1997 | US5662874 Mixing an oxalate ion precursor compound, a water soluble rare earth compound and an ammonium salt to form a double oxalate precipitate and separating |
| 08/28/1997 | DE19606656A1 Process to separate atomised waste water bearing load of ammonium mix |
| 08/20/1997 | CN2260081Y Ammonia synthesis tower internal elements |
| 08/20/1997 | CN1157257A Process for preparation of hydroxylammonium salts |
| 08/19/1997 | US5658545 Air pollution control |
| 08/05/1997 | US5654351 Contacting sodium sulfate in solution with carbon dioxide and a compound containing ammonia |
| 07/31/1997 | WO1997027157A2 Method for the preparation of sodium ammonium phosphate |
| 07/30/1997 | EP0786434A1 Stabilised ammonium nitrate |
| 07/24/1997 | WO1997026077A1 Calcination using liquid metal heat exchange fluid |
| 07/23/1997 | EP0784595A1 Process for removing oxygen from ammonia at room temperature |
| 07/16/1997 | EP0783919A1 Composite hydrogen separation element and module |
| 07/15/1997 | US5648571 Methods for the synthesis of chemical compounds |
| 07/11/1997 | CA2193776A1 Composite hydrogen separation element and module |
| 07/10/1997 | WO1997024175A1 Catalytic reactor and process for exothermic gas phase reactions |
| 07/08/1997 | US5645626 Multicomponent composite metal membranes |
| 06/25/1997 | EP0699171A4 Axial radial reactors in the braun synloop |
| 06/25/1997 | CN1152619A Method for producing spongy iron and coproducing synthetic ammonia by reducing gas |
| 06/11/1997 | CN1035108C Light microporous ammonium nitrate mixture and its preparing process |
| 06/10/1997 | US5637206 From an aqueous ammonium sulfide solution |
| 05/29/1997 | WO1997019018A1 Process for the ammonia and methanol co-production |
| 05/28/1997 | CN1150762A Method and apparatus for permeation separation of gas mixture |
| 05/28/1997 | CN1034988C Process for removing and recoverying nitrogen oxide from nitric acid tail gas |
| 05/27/1997 | US5632964 Cleaning method for exhaust gas containing ammonia and silane |
| 05/21/1997 | CN1150121A Salting out process for producing potassium sulfate |
| 05/15/1997 | DE19644144A1 Hydrolysis of cyanides and cyano complexes under pressure without scale or blockages |
| 05/14/1997 | EP0773189A1 Process for the preparation of hydroxylammonium salts |