| Patents for C07C 273 - Preparation of urea or its derivatives, i.e. compounds containing any of the groups the nitrogen atoms not being part of nitro or nitroso groups (3,705) |
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| 09/02/2004 | US20040171491 Substituted benzoylcyclohexenones and their use as herbicidal agents |
| 09/02/2004 | CA2484105A1 Process and plant for the production of urea |
| 09/01/2004 | EP1289943B1 Process for decomposing a carbamate aqueous solution coming from the urea recovery section of a urea production plant |
| 09/01/2004 | CN1525959A Muller Klaus-helmut |
| 08/26/2004 | US20040167358 Method and reagents for N-alkylating ureides |
| 08/25/2004 | EP1449827A1 Process and plant for the production of urea |
| 08/25/2004 | CN1163478C Novel process for synthesizing diethylbarbituric acid by using sodium methoxide as catalyst |
| 08/25/2004 | CN1163476C Biuret polyisocyanic acid ester and its producing process |
| 08/17/2004 | US6777561 Compounds |
| 08/05/2004 | WO2004064730A2 Compounds, compositions and methods |
| 08/05/2004 | US20040152918 From liquid phase ammonia and carbon dioxide gas; horizontal chemical reactor |
| 08/04/2004 | CN1518534A Copper-catalyzed formation of carbon-heteroatom and carbon-carbon bonds |
| 08/04/2004 | CN1160321C Prepn of biurea |
| 07/29/2004 | US20040147745 Novel compounds and compositions as protease inhibitors |
| 07/28/2004 | EP1439904A1 A micro-engineered chemical reactor |
| 07/22/2004 | US20040143141 Process for production of dimers of aromatic monohydroxyl compounds |
| 07/22/2004 | US20040142877 Ligands of the $g(a)v$g(b)6 integrin |
| 07/21/2004 | CN1158252C Process for preparing biurea |
| 07/21/2004 | CN1158251C Process for prepn. of urea |
| 07/21/2004 | CN1158250C Process of treating urea condensate |
| 07/21/2004 | CN1158137C Apparatus for effecting gas/liquid contact |
| 07/08/2004 | DE10230490B4 Verfahren zur kontinuierlichen Herstellung von Acetylendiharnstoff Process for the continuous production of acetylene diurea |
| 07/06/2004 | US6759554 Copper-catalyzed formation of carbon-heteroatom and carbon-carbon bonds |
| 07/06/2004 | US6759549 Method of preparing amino carboxylic acids |
| 06/24/2004 | US20040122004 such as (1R,2R)-N-[(1S)-2-amino-1-(4-fluorophenyl)-2-oxoethyl]-2-(4-{[{[ethyl(2-hydroxyethyl)amino]carbonyl}(4-fluorophenyl)amino]methyl}phenyl)cyclohexanecarboxamide; for prevention/treatment of cardiovascular disorders |
| 06/17/2004 | US20040116743 Process for the preparation of urea |
| 06/16/2004 | CN1505610A Process for the preparation of urea |
| 06/02/2004 | CN1501827A Ligands of the alpha-v-beta 6 integrin |
| 06/01/2004 | US6743790 Factor VIIa inhibitory (thio)urea derivatives, their preparation and their use |
| 05/20/2004 | US20040097407 Method for the synthesis of compounds of formula I and their uses thereof |
| 05/19/2004 | EP1419103A1 Gasification process for ammonia/urea production |
| 05/19/2004 | CN2616278Y Primary absorbing system towers for urea apparatus |
| 05/19/2004 | CN1498204A Method for production of urea |
| 05/19/2004 | CN1150163C Desorption process by deep hydrolysis for condensed liquid in urea processing process |
| 05/11/2004 | CA2125442C Process for reducing the ammonia content of a gaseous effluent from urea production plants |
| 05/06/2004 | EP1337466B1 Method for producing ammonia on the basis of a nitrogen-hydrogen mixture from natural gas |
| 05/04/2004 | US6730811 Low-pressure carbamate stream formed in upgrading is stripped in countercurrent contact with carbon dioxide |
| 05/04/2004 | US6730278 Process and plant for the production of urea with high conversion yield and low energy consumption |
| 04/28/2004 | EP1294682B1 Acylphenyl urea derivatives, methods for the production thereof and use thereof as a medicament |
| 04/21/2004 | EP1409448A1 Process for the preparation of (r)- or (s)-aminocarnitine inner salt, the salts and derivatives thereof |
| 04/20/2004 | US6723876 Process for the integrated preparation of ammonia and urea |
| 04/20/2004 | US6723875 Process to prepare alkyl-ureas from O,S-dimethyl dithiocarbonate |
| 04/20/2004 | CA2215585C Practical synthesis of urea derivatives |
| 04/15/2004 | US20040073054 Using a fluorinated phenyl compound containing electrophilic and nucleophilic groups |
| 04/14/2004 | CN1488624A Novel substituted propanamide benzoyl urea derivatives, medicinal composition containg same and use thereof |
| 04/13/2004 | US6720400 Continuous processing comprising the steps of reacting excess (cyclo)aliphatic diisocyanates with (cyclo)aliphatic diamines at >170 degrees c. and adding an acid catalyst before/ during the reaction; stability; dilutability; colorless |
| 04/07/2004 | CN2609924Y Urea quick fusion device |
| 04/07/2004 | CN1486974A New benzoyl urea compound and its synthesis and application |
| 04/06/2004 | US6716360 Adding nitrogen oxides; conducting stream up hydraulic updraft column; wet oxidation; ammoniation |
| 04/01/2004 | US20040063963 Dimerization; oxidation coupling of naphthol in presence of complex catalyst of copper chloride-tetramethylethylenediamine |
| 03/25/2004 | US20040058904 Antiinflammatory agents; autoimmune disease |
| 03/18/2004 | US20040054229 Process for the preparation of urea |
| 03/18/2004 | US20040054228 Process for the preparation of urea |
| 03/18/2004 | US20040054191 Method for the continuous production of acetylene diurea |
| 03/18/2004 | US20040053925 Novel urea derivatives, method for preparing same, use thereof as medicines, pharmaceutical compositions and novel use |
| 03/16/2004 | US6706749 Substituted phenyl derivatives, their preparation and use |
| 03/10/2004 | CN1481358A Carboxylic acid amide derivatives and their use in treatment of thromboembolic diseases and tumours |
| 03/10/2004 | CN1141294C Method of recovering dehydrogenation heat energy in urea production |
| 03/09/2004 | US6702992 By splitting in minor and major portions the flow of ammonia and carbon dioxide from the stripping unit; permits condensation of all gaseous reactants in the major portion in the condensation unit for maximum operating efficiency |
| 03/03/2004 | EP1392660A1 Substituted benzoylcyclohexenones and their use as herbicidal agents |
| 03/03/2004 | CN1479720A Process for peparation of urea |
| 02/26/2004 | US20040038858 Carboxamide derivatives and their use in the treatment of thromboembolic diseases and tumours |
| 02/26/2004 | US20040037022 Aminoalcohol derivatives |
| 02/25/2004 | EP1390340A1 Copper-catalyzed formation of carbon-heteroatom and carbon-carbon bonds |
| 02/24/2004 | US6696026 Process for combined production of ammonia and urea |
| 02/24/2004 | CA2032947C Process for the modernization of existing urea plants, and plants so obtained with increased yields and flexibility, and reduced energy consumption and corrosion |
| 02/18/2004 | EP1178958B1 N-cyanomethyl amides as protease inhibitors |
| 02/12/2004 | US20040028595 Method for producing ammonia on the basis of a nitrogen-hydrogen mixture from natural gas |
| 02/12/2004 | US20040028578 Tube bundles for gas circulation; forming urea |
| 02/11/2004 | CN1474806A Process for preparation of urea |
| 02/11/2004 | CN1474782A Method for producing ammonia on the basis of a nitrogen-hydrogen mixture from natural gas |
| 02/11/2004 | CN1474679A Novel coupler for use in oxidative hair dyeing |
| 02/11/2004 | CN1137882C Full-circulation process for preparing urea |
| 02/05/2004 | WO2004011419A1 Process for increasing the capacity of a urea plant |
| 02/04/2004 | CN1472198A Continuous preparation of acetylene diureine |
| 02/04/2004 | CN1137093C Process for recovering urea microparticles |
| 01/29/2004 | US20040019216 Copper-catalyzed formation of carbon-heteroatom and carbon-carbon bonds |
| 01/27/2004 | US6683201 Analine derivatives as OSC inhibitors |
| 01/22/2004 | WO2004007436A1 Method for the continuous production of tetra-substituted ureas |
| 01/22/2004 | WO2004007407A2 Fluorous tagging and scavenging reactants and methods of synthesis and use thereof |
| 01/22/2004 | DE10231085A1 Verfahren zur kontinuierlichen Herstellung von tetrasubstituierten Harnstoffen Process for the continuous preparation of tetrasubstituted ureas |
| 01/22/2004 | DE10230490A1 Verfahren zur kontinuierlichen Herstellung von Acetylendiharnstoff Process for the continuous production of acetylene diurea |
| 01/22/2004 | CA2489408A1 Method for the continuous production of tetra-substituted ureas |
| 01/21/2004 | CN1469774A Carbamate condensation unit |
| 01/21/2004 | CN1468848A Continuous process for producing MDI carbamidoformate |
| 01/20/2004 | US6680407 Installation and process for the preparation of urea |
| 01/20/2004 | CA2177003C Method for the preparation of urea |
| 01/14/2004 | EP1380564A1 Binaphtol derivative and process for producing the same |
| 01/14/2004 | EP1380558A1 Process for production of dimers of aromatic monohydroxyl compounds |
| 01/14/2004 | EP1379495A2 Ligands of the alpha-v-beta 6 integrin |
| 01/08/2004 | WO2004002949A1 Plant for urea production |
| 01/08/2004 | WO2004002941A1 Cosmetic or dermopharmaceutical compositions comprising tyramine derivatives, method for preparing same, and use thereof |
| 01/07/2004 | EP1378511A1 Process for the continous preparation of Acetylenediureine |
| 01/07/2004 | EP1377541A1 Method for the production of urea |
| 01/06/2004 | US6673966 For use in hair coloring formulations |
| 01/02/2004 | EP1375475A1 Plant for urea production |
| 01/02/2004 | EP1027339B1 Method and reagents for n-alkylating ureides |
| 12/31/2003 | CN1463965A Process for preparing 4,4'-dinitro diphenyl urea |
| 12/31/2003 | CN1463964A Water solution all-circulation aquadrate high pressure system energy-saving and production-increasing process |
| 12/24/2003 | CN1463266A Binaphthol derivative and method for producing same |