| 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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| 05/30/2001 | CN1066437C Improved urea synthesis process and apparatus |
| 05/25/2001 | WO2001036403A1 Urea derivatives as anti-inflammatory agents |
| 05/23/2001 | EP0923541B1 Process for the preparation of urea |
| 05/16/2001 | EP0769003B1 Amino acid-derived diaminopropanols |
| 05/15/2001 | US6231827 Process for combined production of ammonia and urea |
| 05/15/2001 | US6231632 Mixture with kaolin and dispersant; fertilizer |
| 05/15/2001 | CA2238978C Retroviral protease inhibiting compounds |
| 05/15/2001 | CA2009669C Novel n-¬substituted aryl|-n'-(substituted alkoxy)-ureas and thioureas as antihypercholesterolemic and antiatherosclerotic agents |
| 05/09/2001 | CN1294123A Catalytic synthesis process of asymmetric aryl substituted carbamide compounds |
| 05/09/2001 | CN1294122A Catalytic synthesis process of asymmetric phenyl substituted carbamide herbicides |
| 05/08/2001 | US6228472 Reacting an isocyanate, alcohol and tertiary amine in presence of metal catalyst; coating a conductive substrate |
| 05/08/2001 | CA2167040C New alkylated (hetero)cyclic compounds; process for preparing the same and pharmaceutical compositions containing them |
| 05/03/2001 | WO2001030748A1 Process for the preparation of urea |
| 05/03/2001 | CA2388887A1 Process for the preparation of urea |
| 05/02/2001 | EP0799194B1 Method for modernizing a plant for urea production |
| 05/02/2001 | CN1293187A Process for clarifying gas containing urea powder |
| 05/01/2001 | US6225470 Heating substituted aminoalkenamides in presence of diluents to produce ar(alk)yluracil |
| 05/01/2001 | CA2139169C Antiherpes peptidomimetic compounds |
| 04/26/2001 | WO2000055125A3 N-cyanomethyl amides as protease inhibitors |
| 04/25/2001 | CN1292724A Apparatus for effecting gas/liquid contact |
| 04/11/2001 | EP1089988A1 Fluorophenyl resin compounds |
| 04/11/2001 | EP1089967A1 Novel compounds useful in pain management |
| 04/11/2001 | EP1089965A1 Novel compounds |
| 04/11/2001 | CN1290693A Improved urea synthetic method and its equipment |
| 04/11/2001 | CN1064349C Novel tricyclic amide, its preparing method and medicinal composition |
| 03/28/2001 | CN1063743C Process and plant for production of urea with high conversion yield and low enerlgy con sumption |
| 03/20/2001 | US6203808 Ceramide compounds, process of preparation and use |
| 03/14/2001 | CN1063174C Improved reactor for synthesis of urea |
| 03/14/2001 | CN1063173C High-output synthesis of urea |
| 03/14/2001 | CN1063172C Synthetic method for urea including two separated reaction zones |
| 03/13/2001 | US6200540 Vertical condenser is installed on or above a urea synthesis column to condense the mixed gas from the stripper by bringing it into contact with an absorption medium under cooling. |
| 02/28/2001 | CN1062553C Improved process for urea production involving a carbon dioxide stripping step |
| 02/22/2001 | WO2000055126A3 N-cyanomethylamides as protease inhibitors |
| 02/21/2001 | CN1284498A Improved process of producing urea with carbon dioxide stripping step |
| 02/15/2001 | WO2001010979A1 Integrated process for converting hydrocarbon gas to liquids |
| 02/14/2001 | CN1284061A Process for prepn. of urea |
| 02/08/2001 | WO2001008633A2 An improved form of form i celiprolol hydrochloride |
| 02/07/2001 | CN1061653C Benzofuran compounds, process for their preparation and pharmaceutical compositions thereof |
| 02/07/2001 | CN1061645C Process for producing urea |
| 01/31/2001 | CN1061338C Aqueous solution recycling energy-saving and yield-raising usea production process and device |
| 01/18/2001 | WO2001004085A1 Method for the preparation of urea |
| 01/18/2001 | CA2379045A1 Method for the preparation of urea |
| 01/17/2001 | EP0912502B1 2-chloro-3,5-bis(trifluoromethyl)phenyl benzoyl urea derivative and process for preparing the same |
| 01/17/2001 | CN2415033Y High-efficiency tower tray set for urea synthetic tower |
| 01/17/2001 | CN1060762C Improved method for urea producing device |
| 01/17/2001 | CN1060761C New aryl (alkyl) propylamides, process for preparing them and pharmaceutical compositions containing them |
| 01/16/2001 | US6175040 Reactor for two-phase reactions, in particular for urea synthesis at high pressure and temperature |
| 01/02/2001 | CA2174034C Novel tricyclic amides, processes for their preparation and the pharmaceutical compositions which contain them |
| 12/27/2000 | CN1277959A Method for preparing urea derivatives by catalytic oxidation and carbonylation of amine |
| 12/26/2000 | US6165315 Reactor for the synthesis of urea |
| 12/13/2000 | CN1276368A Process for synthesizing unsymmetrically substituted urea herbicides |
| 12/12/2000 | CA2224370C Method of detecting clogging and granulation method |
| 12/05/2000 | US6156899 N-aryl-2-hydroxyalkylamido compositions for inducing/stimulating hair growth and/or retarding hair loss and/or for treating hyperseborrhea and/or acne |
| 11/30/2000 | WO2000071506A2 Naphthalene ureas as glucose uptake enhancers |
| 11/30/2000 | WO2000071487A1 Urea processing agent |
| 11/30/2000 | CA2374225A1 Naphthalene ureas as glucose uptake enhancers |
| 11/28/2000 | US6153753 Method of preparing amino carboxylic acids |
| 11/22/2000 | CN1058704C Method for prepn. of urea by carbon dioxide stripping method |
| 11/21/2000 | US6150555 Process for urea production |
| 11/15/2000 | CN1273581A Method and reagents for N-alkylating ureides |
| 11/08/2000 | CN1272518A Method for preparing thixotropic agent and its application |
| 11/02/2000 | WO2000064866A1 Diphenylurea derivatives |
| 11/02/2000 | EP1048681A2 Process for the preparation of a thixotropic compound and its use |
| 11/02/2000 | DE19919482A1 Verfahren zur Herstellung eines thixotropie-Mittels und dessen Verwendung A process for the preparation of a thixotropic agent and the use thereof |
| 11/01/2000 | CN1271725A Process for preparing unsymmetric phenyl substituted urea |
| 10/26/2000 | DE19917961A1 Verfahren zur Herstellung von Aminosäurederivaten Process for the preparation of amino acid derivatives |
| 10/25/2000 | EP1046638A2 Process for the preparation of aminoacid derivatives |
| 10/25/2000 | CN1270957A Method for simultaneously modernization of ammonia producing equipment and urea producing equipment |
| 10/24/2000 | US6136762 Method for preparing urea grease having low noise properties |
| 10/24/2000 | CA2137445C Naphtalene derivates, process for their preparation and pharmaceutical compositions containing them |
| 10/17/2000 | US6133319 For treating an interleukin-8 (il-8) mediated disease by administering a phenyl urea or phenyl thiourea of given formula, such as n-cyclohexyl-n'-(2-hydroxy-4-nitrophenyl)urea |
| 10/04/2000 | EP1041065A1 Method for isolating urea using membranes and compositions thereof |
| 10/04/2000 | EP1041038A1 Method for the simultaneous modernization of a plant for ammonia production and a plant for urea production |
| 10/04/2000 | CN1057081C Method for recovery of solvent in dewaxing process of isopropyl alcohol urea |
| 10/03/2000 | US6127575 Reacting an amine with a carbon dioxide oxygen mixture gas in a solvent and in the presence of a catalyst system comprising at least one selenium compound and an alkali metal carbonate as a co-catalyst |
| 10/03/2000 | CA2177773C New aryl(alkyl)propylamides, process for preparing the same and pharmaceutical compositions containing them |
| 09/27/2000 | CN1267668A Modernization method for urea production equipment |
| 09/26/2000 | US6124466 Nitroisourea derivative |
| 09/21/2000 | WO2000055126A2 N-cyanomethylamides as protease inhibitors |
| 09/21/2000 | WO2000055125A2 N-cyanomethyl amides as protease inhibitors |
| 09/21/2000 | WO2000055124A2 Novel compounds and compositions as protease inhibitors |
| 09/21/2000 | CA2368148A1 Novel compounds and compositions as protease inhibitors |
| 09/21/2000 | CA2368122A1 Novel compounds and compositions as protease inhibitors |
| 09/21/2000 | CA2367348A1 Novel compounds and compositions as protease inhibitors |
| 09/20/2000 | EP1036787A1 Method for modernizing a urea production plant |
| 09/19/2000 | US6121488 Quenching reagents for solution phase synthesis |
| 09/19/2000 | US6120740 Reactor for two-phase reactions, in particular for urea synthesis at high pressure and temperature |
| 09/13/2000 | EP1035112A1 Improved urea synthesis process and apparatus therefor |
| 09/13/2000 | EP1035111A1 Improved urea synthesis process and apparatus therefor |
| 09/12/2000 | US6118023 Method for increasing the capacity of an existing urea process |
| 09/05/2000 | US6114579 High-pressure process |
| 09/05/2000 | US6114493 Contacting a compound to be phosgenated with an excess of a phosgene source in the form of a solid phase reagent; supports in combinatorial synthesis for the creation of libraries of compounds for lead identification |
| 08/30/2000 | EP1030846A1 Method for producing ar(alk)yluraciles, novel corresponding intermediate products and method for producing said intermediate products |
| 08/30/2000 | CN2393878Y Cap-type urea synthesis converter tray |
| 08/29/2000 | US6111138 Gas stream of ammonia and carbon dioxide which is released during the high pressure synthesis of melamine is condensed at pressure equal to that in the melamine reactor, anhydrous ammonium carbamate formed is fed to a urea stipping plant |
| 08/24/2000 | WO2000049002A1 Processes and intermediates for the preparation of 1,3-oxazin-6-ones and uracils |
| 08/24/2000 | CA2364281A1 Processes and intermediates for the preparation of 1,3-oxazin-6-ones and uracils |
| 08/16/2000 | EP1027339A1 Method and reagents for n-alkylating ureides |
| 08/16/2000 | CN1263088A Preparation of o-alkyl isourea |
| 08/16/2000 | CN1055462C Method for preparing urea |