| 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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| 07/08/1999 | WO1999033790A1 Insecticidal fluoro-substituted benzoylureas |
| 06/29/1999 | US5917083 Reacting an isocyanate group containing oxadiazinetrione compound with an primary alcohol |
| 06/23/1999 | EP0923541A1 Process for the preparation of urea |
| 06/22/1999 | US5914332 Retroviral protease inhibiting compounds |
| 06/18/1999 | WO1999031053A1 Improved process for the synthesis of urea and equipment therefor |
| 06/17/1999 | WO1999029663A1 Process for the preparation of urea |
| 06/16/1999 | EP0922696A2 Urea derivatives of alpha, omega-diaminoacids and peptides |
| 06/16/1999 | CN1219443A Surface tension reduction with N-N-dialkyl ureas |
| 06/09/1999 | EP0920456A1 Phosgenated oxime resins and their preparation |
| 06/09/1999 | EP0920434A2 Bis-platinum complexes with polymethylene derivatives as ligands having antitumor activity |
| 06/02/1999 | EP0918809A1 Process for producing polyisocyanates containing biuret groups from (cyclo) aliphatic diisocyanates |
| 06/02/1999 | CN1218035A Method for recovering solvent in dewaxing process of iospropyl alcohol urea |
| 05/27/1999 | WO1999025698A1 Method for producing ar(alk)yluraciles, novel corresponding intermediate products and method for producing said intermediate products |
| 05/26/1999 | CN1217325A Process for preparing nitroso-urea compounds |
| 05/20/1999 | DE19750195A1 Production of aryl and aralkyl substituted uracil derivatives useful as herbicides |
| 05/19/1999 | EP0916652A1 N-Aryl 2-hydroxy alkylamides |
| 05/19/1999 | EP0916393A2 Surface tension reduction in water based systems |
| 05/12/1999 | EP0915081A1 Ceramide compounds, process for their preparation and use |
| 05/11/1999 | US5902899 Process for preparing 1, 3-disubstituted urea |
| 05/06/1999 | WO1999021828A1 Synthesis and isolation of n-(aryl or heteroaryl)-alkyl-n-hydroxyurea |
| 05/06/1999 | EP0912505A1 Il-8 receptor antagonists |
| 05/06/1999 | EP0912502A1 2-chloro-3,5-bis(trifluoromethyl)phenyl benzoyl urea derivative and process for preparing the same |
| 05/04/1999 | CA2250479A1 Ceramide compound, process for preparing it and its use |
| 04/28/1999 | EP0911106A1 Protective lining for pressure equipment which can be used in processes for the synthesis of urea |
| 04/28/1999 | EP0796244B1 Process and plant for the production of urea with high conversion yield and low energy consumption |
| 04/28/1999 | EP0793645B1 Iminooxymethylene anilides, process and intermediate products for preparing the same and pesticides containing the same |
| 04/21/1999 | CN1043040C Preparation of 4,4'-dinitro sym-diphenylurea |
| 04/21/1999 | CN1043039C Process for concentrating urea solution under vacuum |
| 04/20/1999 | CA2003107C Process for the production of n,n'-bis-(3-aminophenyl)-ureas |
| 04/15/1999 | WO1999018084A1 Method and reagents for n-alkylating ureides |
| 04/14/1999 | CN1213989A Safety process for pressure equipment in contact with corrosive fluids |
| 04/07/1999 | EP0906273A1 Phenyl derivatives containing an acidic group, their preparation and their use as chloride channel blockers |
| 04/07/1999 | CN1212951A Process for combined production of ammonia and urea |
| 03/31/1999 | EP0905127A1 Process for combined production of ammonia and urea |
| 03/30/1999 | US5888460 Reactor for two-phase reactions, in particular for urea synthesis at high pressure and temperature |
| 03/30/1999 | CA1340467C Benzoylphenylureas, the preparation thereof and the use thereof in pest control |
| 03/24/1999 | EP0667855B1 Substituted arylalkynyl- and heteroarylalkynyl-n-hydroxyurea inhibitors of leukotriene biosynthesis |
| 03/23/1999 | US5886222 Reacting ammonia and carbon dioxide under high temperature and pressure, separation of urea from mixture containing the unreacted products; recycling of the latter; feeding carbamate to the stripper having little water |
| 03/17/1999 | EP0902015A1 Process for the preparation of nitrosourea compounds |
| 03/16/1999 | CA2160140C Cycloalkylhydroxyureas and their use as lipoxygenase inhibitors |
| 03/13/1999 | CA2246941A1 Process for the preparation of nitrosourea compounds |
| 02/23/1999 | US5874615 Method for the preparation of insecticidal benzoylurea compounds |
| 02/17/1999 | EP0896590A1 Rapid purification by polymer supported quench |
| 02/17/1999 | CN1208405A Retroviral protease inhibiting compounds |
| 01/20/1999 | EP0891968A1 Process for reducing the residual free ammonia emissions from an urea production plant |
| 01/20/1999 | EP0693053B1 Urea and amide derivatives and their use in the control of cell membrane potassium channels |
| 01/07/1999 | EP0888367A1 Isolated rna molecules which bind to arginine and uses thereof |
| 01/07/1999 | EP0888176A1 Safety process for pressure equipment in contact with corrosive fluids |
| 12/23/1998 | CN1202483A New-energy-saving and yield-raising urea production process recycling aqueous solution fully and its apparatus |
| 12/22/1998 | US5852160 Phosgenated oxime resins and their preparation |
| 12/16/1998 | CN1041199C Energy saving device for producing urea by full-circulating process |
| 12/15/1998 | US5849952 Urea production process with high energy efficiency |
| 12/15/1998 | US5849781 Tricyclic amides |
| 12/09/1998 | EP0882024A1 Retroviral protease inhibiting compounds |
| 12/09/1998 | CN1041086C Urea production process with high efficiency |
| 12/08/1998 | US5847209 Process for recovery of solid and reusable urea from the urea adduction process |
| 12/08/1998 | US5847208 Method for increasing the yield and the production potential of urea reactors |
| 12/08/1998 | US5847134 Fluorocarbon-containing isocyanate derivatives and soil-resist agents |
| 12/02/1998 | CN1200683A Hydrolysis reactor for removal of urea ammonia and carbon dioxide from liquid phase comprising urea in aqueous solution |
| 11/24/1998 | US5840977 Methods of producing pantothenic acid derivative and its starting materials for producing the same |
| 11/18/1998 | EP0877731A1 Fluorocarbon-containing isocyanate derivatives and soil-resist agents |
| 11/12/1998 | DE19719024A1 Preparation of crystalline O-methyl-isourea acetate |
| 11/11/1998 | EP0876812A2 Cosmetic compositions comprising saccharic acid ureides |
| 11/11/1998 | CN1198434A Process for preparing crystal 0-methyl-isourea acetate |
| 11/11/1998 | CN1198326A Comsetic preparation containing saccharoureide |
| 10/28/1998 | EP0873182A1 Hydrolysis reactor for removal of urea, ammonia and carbon dioxide from a liquid phase comprising urea in aqueous solution |
| 10/28/1998 | CN1197451A Process for producing carbamoylmethylurea derivatives |
| 10/28/1998 | CN1040463C Purification process for urea synthetizing with metal surfaces and its treatment equipment |
| 10/07/1998 | EP0868419A1 Method for preparing n,n-dimethyl-n'-phenylureas |
| 09/22/1998 | US5811290 Applying a composition comprising an adduct of urea with a non-ionic surfactant and a phosphorus source |
| 09/09/1998 | CN1192730A Process and device for preparing (cyclo) aliphatic biuret groups-contg. polyisocyanates |
| 09/09/1998 | CN1192435A Method for increasing capacity of existing urea process |
| 09/02/1998 | EP0861829A2 Process for the preparation of polyisocyanates having a biuret structure |
| 08/26/1998 | EP0859591A1 Use of at least one no synthase inhibitor for treating sensitive skin |
| 08/26/1998 | CA2230148A1 Process for the production of polyisocyanates having a biuret structure |
| 08/25/1998 | US5798383 Prevention of an inflammatory disease, allergy or cardiovascular disease for which a 5-lipoxygenase inhibitor is needed |
| 08/20/1998 | WO1998035930A1 Method of preparing amino carboxylic acids |
| 08/20/1998 | CA2271201A1 Method of preparing amino carboxylic acids |
| 08/11/1998 | US5792889 Process for urea production involving a carbon dioxide stripping step |
| 08/11/1998 | CA2076589C Naphthylethylureas and naphthylethylthioureas, the process for their preparation and pharmaceutical compositions holding same |
| 08/05/1998 | CN1039413C Stripping recirculation tech. and appts. for urea prodn. |
| 07/30/1998 | WO1998032731A1 Process for preparing urea |
| 07/29/1998 | EP0855388A2 Method for making intermediates useful in synthesis of retroviral protease inhibitors |
| 07/29/1998 | EP0809663B1 Process for producing polyisocyanates containing biuret groups |
| 07/22/1998 | CN1188108A Process for producing urea |
| 07/14/1998 | US5780512 Alkylated (hetero) cyclic compounds |
| 07/14/1998 | US5779945 Urea fertilizer |
| 07/01/1998 | EP0850217A1 Process for the preparation of arylalkynyl-n-hydroxyurea derivatives having lipoxygenase inhibitory activity |
| 06/16/1998 | US5767313 Method for the preparation of urea |
| 06/10/1998 | EP0846679A2 Process for preparing 1,3-disubstituted urea |
| 06/10/1998 | EP0693054B1 Cycloalkylhydroxyureas and their use as lipoxygenase inhibitors |
| 06/09/1998 | US5763660 High yield process for urea synthesis |
| 06/02/1998 | US5760071 An urea or thiourea compounds for treating melatoninergic system disorder, sleep disorder |
| 05/28/1998 | DE19749568A1 Process for cleaning (poly)isocyanurate(s) |
| 05/27/1998 | EP0844236A1 Process for producing carbamoylmethylurea derivatives |
| 05/20/1998 | EP0787036B1 Reactor for two-phase reactions, in particular for urea synthesis at high pressure and temperature |
| 05/20/1998 | EP0782490B1 Method for restoring the functionality of equipment subjected to heavy corrosion in a plant for the production of urea |
| 05/13/1998 | EP0840722A1 Process and device for preparing (cyclo)aliphatic biuret groups-containing polyisocyanates |
| 05/12/1998 | US5750780 Process for the synthesis of urea comprising two separate reaction zones |
| 05/12/1998 | US5750717 2-isoxazoline derivative and process for producing the same, and process for producing related derivatives from the same |