| Patents for C01C 1 - Ammonia; Compounds thereof (7,027) |
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| 07/21/1999 | CN1223169A Method for in-situ modernization of heterogeneous exothermic synthesis reactor |
| 07/20/1999 | US5925328 Steam reforming process |
| 07/15/1999 | WO1999025667A3 Method for the conversion of ammonia |
| 07/14/1999 | EP0928774A1 Process for production of ammonium thiosulphate |
| 07/07/1999 | CN1043962C Converters for heterogeneous catalytic synthesis, particularly for ammonia and methanol, under pressure |
| 06/30/1999 | EP0614400B1 Chromium-free impregnated activated universal respirator carbon for adsorption of toxic gases and/or vapors |
| 06/17/1999 | WO1999004883A9 Method for ammonia production |
| 06/16/1999 | CN1219506A Anticaking agent for ammonium nitrate |
| 06/16/1999 | CN1219443A Surface tension reduction with N-N-dialkyl ureas |
| 06/09/1999 | EP0921127A1 Process for preparing organosilazanes |
| 05/27/1999 | WO1999025667A2 Method for the conversion of ammonia |
| 05/20/1999 | DE19749308A1 Reduction of nitrogen oxide(s) in the flue gas from incinerator plants |
| 05/19/1999 | EP0916393A2 Surface tension reduction in water based systems |
| 05/18/1999 | US5904906 Reactor and plant for manufacturing ammonium salts |
| 05/18/1999 | CA2205199C Method for production of sodium bicarbonate, sodium carbonate and ammonium sulfate from sodium sulfate |
| 05/05/1999 | CN1215695A Carbon monooxide conversion method capable of eliminating saturated hot-water tower |
| 04/28/1999 | CN1043136C Ammonium chloride crystal external cooling equipment in combined process alkali proparation technology |
| 04/28/1999 | CN1043135C Process for recovering high purity liquid ammonia from oil-refining waste water |
| 04/20/1999 | US5895635 Process for recovery and recycle of ammonia from an acrylonitrile reactor effluent stream using an ammonium phosphate quench system |
| 04/07/1999 | CN1212951A Process for combined production of ammonia and urea |
| 04/01/1999 | DE19741810A1 Determination of presence of total nitrogen in sample by pyrolysis |
| 03/31/1999 | EP0905127A1 Process for combined production of ammonia and urea |
| 03/31/1999 | CN1042723C Method for preparing potassium sulphate |
| 03/24/1999 | CN1211465A Process for removing sulphur dioxide from flue gases |
| 03/24/1999 | CN1211464A Equipment for removing SO2 from flue-gas and producing ammonium sulfate |
| 03/16/1999 | US5883297 Forming the triamides from phosphoryl dichlorides and ammonia |
| 03/16/1999 | US5882606 Boilers for generation of high pressure stream, connecting the boiler to the shell in proximity to nozzle |
| 02/25/1999 | WO1999009034A2 Improvements in and relating to compounds and complexes |
| 02/17/1999 | CN1208019A Liquid phase process producing ferric oxide, potassium sulfate and ammonium chloride |
| 02/16/1999 | US5872293 Separating ammonium chloride from N-hydrocarbylphosphoric triamide or N-hydrocarbylthiophosphoric triamide |
| 02/04/1999 | WO1999004883A1 Method for ammonia production |
| 02/04/1999 | CA2296288A1 Method for ammonia production |
| 02/03/1999 | CN1206748A Process for regenerating accumulator desulfurating agent |
| 02/03/1999 | CN1041895C Process for the simultaneous absorption of sulfur oxides and production of ammounium sulfate |
| 01/26/1999 | US5863442 Electrodeposition of silver, acidification of fixer bath with hydrogen chloride to precipitate sulfur, mixing solution with spent developer, adjustment to ph 2, heating and drawing off sulfur dioxide, then basification to liberate ammonia |
| 01/26/1999 | CA2157885C Process for making anhydrous magnesium chloride |
| 01/20/1999 | EP0891805A2 Process for removing SO2 from exhaust gases |
| 01/20/1999 | EP0891804A2 Device for removing SO2 from exhaust gases and preparation of an ammonium sulfate solution |
| 01/19/1999 | CA2205493C Method for production of sodium bicarbonate, sodium carbonate and ammonium sulfate from sodium sulfate |
| 01/13/1999 | CN2303832Y Heat exchanger for use in ammonium, methyl alcohol synthesizing tower |
| 01/13/1999 | CN1204620A Process for recovery and recycle of ammonia from acrylonitrile reactor efflvent stream using ammonium phosphate quench system |
| 01/13/1999 | CN1204619A Dry recovery technology for material |
| 01/13/1999 | CN1041619C Process for producing potassium sulfate by plaster stone conversion method |
| 01/07/1999 | DE19753480C1 Production of organo-silazane and free-flowing ammonium chloride |
| 01/05/1999 | US5856365 Inert support, cobalt; ruthenium and cobalt;, scandium or yttrium; calcining, reduction, passivation |
| 12/30/1998 | CN1041401C Method for producing potassium sulfate by neutral one-step process |
| 12/30/1998 | CN1041386C Treating method for conversion catalyst carrier alundum |
| 12/23/1998 | EP0885843A1 Process for recovery and recycle of ammonia from an acrylonitrile reactor effluent stream using an ammonium phosphate quench system |
| 12/23/1998 | CN1202457A Process and reactor for preparation of ammonia |
| 12/23/1998 | CN1202387A Steam purifying method and apparatus for change-over system of synthetic ammonia plant |
| 12/17/1998 | DE19724515A1 Purification of water contaminated with ammonia |
| 12/16/1998 | CN1041192C Process for preparing cationic surfactant |
| 12/15/1998 | CA1340259C Process and apparatus for performing chemical reactions under pressure in a multi-staged reaction zone with intermediate external thermal conditionning |
| 12/09/1998 | CN1201031A Method for separating ammonium sulfate and ammonium hydrogen sulfate and method for producing 2-hydroxyl-4-methyl-thiobutanoic acid using said method |
| 12/08/1998 | US5846507 Fe1-x O-based catalyst for ammonia synthesis |
| 12/08/1998 | US5846387 On-site manufacture of ultra-high-purity hydrochloric acid for semiconductor processing |
| 12/08/1998 | US5846386 On-site ammonia purification for semiconductor manufacture |
| 11/25/1998 | CN1199647A Disposal method of extracted benzene residuum from caprolactam production |
| 11/24/1998 | US5840266 Dehydration of fluoride mixtures |
| 11/18/1998 | CN1199382A Method for preparation of sodium ammonium phosphate |
| 11/18/1998 | CN1040745C Process for preparing rareearth ammonium double oxalate |
| 11/17/1998 | US5837158 Blend of addition polymer, catalyst and diluent |
| 11/12/1998 | WO1998050141A1 Method of preparation of sealed gas chambers |
| 11/12/1998 | CA2288714A1 Method of preparation of sealed gas chambers |
| 11/04/1998 | CN1198110A On-site ammonia purification for semiconductor manufacture |
| 11/04/1998 | CN1198102A On-site generation of ultra-high-purity buffered HF for semiconductor processing |
| 11/03/1998 | US5830422 Continuous processing |
| 10/28/1998 | EP0873972A2 Process and reactor for the preparation of ammonia |
| 10/27/1998 | US5827490 Method for converting urea to ammonia |
| 10/22/1998 | WO1998046063A2 System and method for disposal of hydrazine propellants and other energetic materials |
| 10/15/1998 | WO1998045211A1 Oxygen and nitrogen injection for increasing ammonia production |
| 10/15/1998 | CA2255950A1 Oxygen and nitrogen injection for increasing ammonia production |
| 10/14/1998 | EP0870729A1 Process and device for producing chemical products of high purity for the microelectronic industry |
| 10/14/1998 | CN1196041A Process for ammonia and methanol co-production |
| 10/07/1998 | CN1040093C Method for recovering heat in production of synthesized ammonia |
| 10/01/1998 | WO1998042623A1 Methods for the production of ammonia from urea and uses thereof |
| 09/30/1998 | CN2292793Y Three-gas burning furnace for synthesis of ammonia |
| 09/24/1998 | WO1998041472A1 Ammonium sulfate produced from flue-gas scrubber liquor |
| 09/17/1998 | WO1998040160A1 Ammonia oxidation catalyzer |
| 09/16/1998 | CN1039791C Gas-solid catalyst reactor |
| 09/09/1998 | EP0863135A2 Method for separating ammonium sulfate and ammonium bisulfate from each other and process for producing 2-hydroxy-4-methylthiobutanoic acid utilizing the method |
| 09/09/1998 | EP0862536A1 Process for the ammonia and methanol co-production |
| 09/09/1998 | EP0831978A4 On-site ammonia purification for semiconductor manufacture |
| 09/09/1998 | CN1039700C Method for producing synthetic ammonia |
| 09/02/1998 | CN1192189A Process for the ammonia and methanol co-production |
| 09/02/1998 | CN1039636C Method for eliminating NH3-N from thin ammonia water |
| 08/26/1998 | EP0860673A2 Synthesis gas waste heat boiler |
| 08/26/1998 | EP0835168A4 On-site manufacture of ultra-high-purity nitric acid for semiconductor processing |
| 08/26/1998 | CN2288770Y Exothermal gas-solid phase catalytic synthetic reactor |
| 08/19/1998 | CN1190913A On-site manufacture of ultra-high-purity hydrofluoric acid for semiconductor processing |
| 08/12/1998 | CN1190360A On-site generation of ultra-high-purity buffered-HF for semiconductor processing |
| 08/11/1998 | US5792439 Reduction of nitrate ions in acid medium using palladium and platinum metal particles as catalyst |
| 08/05/1998 | CN1189452A Novel method for prodn. of nitrate |
| 07/29/1998 | CN1039306C Method for reducing energy consumption in ammonia-preparing technique using heavy oil as raw material |
| 07/28/1998 | US5785820 On-site manufacture of ultra-high-purity hydrofluoric acid for semiconductor processing |
| 07/23/1998 | WO1998031693A1 Preparation of n-hydrocarbylthiophosphoric triamides |
| 07/23/1998 | WO1998031692A1 Separating ammonium chloride from n-hydrocarbyl(thio)phosphoric triamide |
| 07/23/1998 | CA2278004A1 Separating ammonium chloride from n-hydrocarbyl(thio)phosphoric triamide |
| 07/23/1998 | CA2278003A1 Preparation of n-hydrocarbylthiophosphoric triamides |
| 07/22/1998 | EP0853608A1 Process for the ammonia and methanol co-production |