| 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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| 11/23/1995 | WO1995031278A1 Reactor for two-phase reactions, in particular for urea synthesis at high pressure and temperature |
| 11/21/1995 | US5468873 Process for preparing amide n-carbox-amides |
| 11/15/1995 | EP0682012A1 Process for the preparation of light stable polyisocyanates containing allophanate groups |
| 10/25/1995 | EP0438579B1 New monomeric units obtained from hydroxy fatty acids, for manufacturing plastics |
| 09/20/1995 | CN1108645A Process for reducing the ammonia content of a gaseous effluent from urea production plants |
| 09/12/1995 | US5449788 Process for preparing 2-oxindole-1-carboxamides |
| 09/12/1995 | US5449690 Naphthylethylureas and naphthylethylthioureas |
| 09/12/1995 | US5449689 Naphthylethylureas and naphthylethylthioureas |
| 09/08/1995 | WO1995023793A1 2-isoxazoline derivative and process for producing the same, and process for producing related derivatives from the same |
| 08/29/1995 | US5446200 Process for the purification of technical-grade N-alkyl urea |
| 08/23/1995 | EP0667855A1 Substituted arylalkynyl- and heteroarylalkynyl-n-hydroxyurea inhibitors of leukotriene biosynthesis |
| 08/03/1995 | WO1995020574A1 Process for preparing 2-oxindole-1-carboxamides |
| 07/12/1995 | EP0662471A2 Naphthalene derivatives with affinity to the receptors of melatonine, process for their preparation and pharmaceutical compositions containing them |
| 07/05/1995 | CN1104633A Process and plant for the production of urea in reaction spaces with different yields |
| 07/05/1995 | CN1029230C Method for preparing of hydroxamic acid and N-hydroxyurea derivatives |
| 06/28/1995 | CN1104210A An application and method for the production of N-cyclic and N,N'-dicyclic ureas |
| 06/01/1995 | WO1995014653A1 Method for making intermediates useful in synthesis of retroviral protease inhibitors |
| 05/24/1995 | EP0653961A1 Process for the production of urea granules. |
| 05/10/1995 | EP0652228A1 Urethanes and ureas that induce cytokine production |
| 04/25/1995 | US5410079 5-ureido-1,3-diamino-2,4,5-trinitrobenzene |
| 04/19/1995 | CN1101642A Bollworm killing urea and preparation for its asymmetry substitute urea compound |
| 04/12/1995 | CN1101343A Process for synthetizing urea from ammonia and carbon dioxide, with total carbon dioxide conversion |
| 04/04/1995 | US5403956 Efficient recycling of unreacted ammonia and by-product, carbamate, from first reaction of pure ammonia and carbon dioxide |
| 03/29/1995 | CN1100717A Improved process for urea production involving a carbon dioxide stripping step |
| 03/22/1995 | CN1100413A Urethanes and ureas that induce cytokine production |
| 03/22/1995 | CN1100412A Stripping recirculation technology & apparatus for urea production |
| 03/21/1995 | US5399755 Process and equipment for the hydrolysis of residual urea in the water from synthesis plants |
| 03/08/1995 | EP0559743B1 Novel hydroxamic acid and n-hydroxyurea derivatives and their use |
| 02/14/1995 | US5389683 Useful in treating or preventing a disorder of the melatoninergic system |
| 02/01/1995 | CN1098090A Energy saving device for producing urea by full-circulating process |
| 01/31/1995 | US5385944 Treating or preventing disorders of melatoninergic system |
| 01/31/1995 | CA1334232C Process for the production of polyisocyanates containing allophanate groups |
| 01/10/1995 | US5380943 Reaction of ammonia and carbon dioxide |
| 01/10/1995 | CA1333912C Process for concentrating a urea solution and installation for carrying out the process |
| 01/04/1995 | EP0632018A1 Sulphuric acid-urea composition resulting from the reaction of urea with a sulphuric acid sludge of petroleum origin, method of preparation and use as a fertiliser source |
| 12/21/1994 | EP0629612A1 Ureas derived from alpha, omega-diaminoacids and process for their preparation |
| 12/21/1994 | EP0629611A1 Process for reducing the ammonia content of a gaseous effluent from urea production plants |
| 12/19/1994 | CA2125638A1 .alpha.,w-diaminoacid-derived ureins and process for their preparation |
| 12/14/1994 | EP0628541A1 Carbodiimides and/or oligomeric polycarbodiimides based on 1,3-bis-(1-methyl-1-isocyanatoethyl)-benzene, process for their preparation and their use as stabilizer against hydrolysis |
| 11/17/1994 | EP0624571A1 Process and plant for the production of urea in reaction spaces with different yields |
| 11/15/1994 | CA2123519A1 Process and plant for the production of urea in reaction spaces with different yields |
| 11/13/1994 | CA2123261A1 Urethanes and ureas that induce cytokine production |
| 11/02/1994 | EP0622335A1 A method for treating ammonia and urea condensates |
| 10/25/1994 | US5359140 Urea production process of high energy efficiency |
| 10/13/1994 | WO1994022814A1 Cycloalkylhydroxyureas and their use as lipoxygenase inhibitors |
| 10/13/1994 | WO1994022807A1 Urea and amide derivatives and their use in the control of cell membrane potassium channels |
| 10/11/1994 | CA1332426C Process for enhanced urea production |
| 10/05/1994 | EP0520016B1 Derivatives of urea, their preparation and medicaments containing them |
| 09/14/1994 | EP0614883A1 Process for synthetizing urea from ammonia and carbon dioxide, with total carbon dioxide conversion |
| 09/13/1994 | CA1331993C Process for the synthesis of urea and material used in it |
| 09/11/1994 | CA2118659A1 Process for synthetizing urea from ammonia and carbon dioxide, with total carbon dioxide conversion |
| 08/31/1994 | EP0612740A1 Methods of producing pantothenic acid derivative and its starting materials for producing the same |
| 08/24/1994 | EP0611753A1 Improved process for urea production involving a carbon dioxide stripping step |
| 08/24/1994 | CN1091125A A method of retrofitting a pre-existing plant for urea production including an ammonia stripping section |
| 08/24/1994 | CN1025734C Process for the modernization of existing urea plants, and plants so botained with increased yields and flexibility, and reduced energy consumption and corrosion |
| 08/16/1994 | US5338859 Process for the production of calcium salts of hydantoic acids |
| 08/16/1994 | US5338760 Treatment of nervous system and gastrointestinal disorders |
| 08/10/1994 | CN1025610C Method for recovery of urea contained in steam in vacuum concentrating system |
| 07/08/1994 | CA2113061A1 Process for urea production involving a carbon dioxide stripping step |
| 06/28/1994 | CA1330444C Process for the preparation of urea |
| 06/23/1994 | WO1994013630A1 Process for obtaining carbamide |
| 06/22/1994 | EP0603131A1 Aromatic urea compound used as hardening accelerator for a composition of epoxy resin and dicyandiamide |
| 06/19/1994 | CA2111601A1 Thermosetting compositions based on epoxy resins, dicyandiamide and a curing accelerator having a good ratio between stability and reactivity |
| 06/15/1994 | CN1025026C Process for preparing pure unsymmetrically disubstituted ureas |
| 06/08/1994 | CN1024920C Process for enhanced urea production |
| 05/31/1994 | US5316554 Method for processing crystalline ammonium carbamate |
| 05/26/1994 | WO1994011342A1 Substituted arylalkynyl- and heteroarylalkynyl-n-hydroxyurea inhibitors of leukotriene biosynthesis |
| 05/26/1994 | CA2136077A1 Substituted arylalkynyl- and heteroarylalkynyl-n-hydroxyurea inhibitors of leukotriene biosynthesis |
| 05/25/1994 | EP0598250A1 Method of retrofitting a pre-existing plant for urea production including an ammonia stripping section |
| 05/17/1994 | US5312889 Hydroxyfatty-acid-based monomers for producing plastics |
| 05/17/1994 | US5312831 Immunology, anticarcinogenic agents and AIDS treatment |
| 05/17/1994 | CA1329625C Process for urea production |
| 05/11/1994 | CN1086511A Cheap, energy-saving, safety urea production process and its plant |
| 05/04/1994 | EP0594588A1 Cycloalkyl-substituted glutaramide antihypertensive agents |
| 04/26/1994 | US5306842 Method of manufacturing aromatic urethanes |
| 04/26/1994 | US5306355 System for the passivation of metal surfaces affected by operating conditions and agents promoting corrosion |
| 04/19/1994 | US5304353 Apparatus for increasing the yield and the production potential of urea reactors |
| 04/13/1994 | CN1085209A Process for the preparation of isocyanates by the decomposition of N,N,N¨-trisubstituted ureas |
| 03/16/1994 | CN1083806A 改进的尿素生产方法 Improved process for urea production |
| 03/16/1994 | CN1024004C Fungicides |
| 03/08/1994 | US5292935 Method of synthesis and novel compounds for pharmaceutical uses |
| 03/08/1994 | CA1327606C Process for the synthesis of urea |
| 02/23/1994 | EP0583637A1 Process for the preparation of isocyanes by decomposition of N,N,N'-trisubstituted ureas |
| 02/22/1994 | US5288751 [(Substituted) phenyalkyl]furylalkynyl-and [substituted) phenyalkyl] thienylalkynyl-N-hydroxyurea inhibitors or leukotriene biosynthesis |
| 02/17/1994 | WO1994003267A1 Process for the production of urea granules |
| 02/14/1994 | CA2100718A1 Process for the preparation of isocyanates by the decomposition of n,n,n'-trisubstituted ureas |
| 02/08/1994 | CA1326861C Acrylic derivative of urea |
| 02/01/1994 | US5283362 Reacting with an amine, terminating the reaction before the formation of by-product |
| 02/01/1994 | CA1326668C Ethers and thioethers having therapeutical activity, their preparation and pharmaceutical compositions containing them |
| 01/18/1994 | US5280044 Containing benzene structure |
| 01/04/1994 | US5276183 Process and plant for the production of urea |
| 12/28/1993 | US5273623 Process for concentrating urea solution under vacuum |
| 11/18/1993 | EP0569629A1 Method for producing acidic urea solutions |
| 11/17/1993 | CN1078453A Urea granules coated with melamine powder |
| 10/28/1993 | CA2067262A1 Methods for producing stable, acidic urea solutions |
| 10/06/1993 | CN1022321C Process for concentrating urea solution and installation for carrying out process |
| 09/28/1993 | US5248821 Process for preparing polyoxyethylene amines with urea linkages |
| 09/28/1993 | US5248755 With adduct of isocyanic acid and tertiary amine |
| 09/22/1993 | EP0561235A2 Urea granules coated with melanin powder |
| 09/19/1993 | CA2091129A1 Urea granules coated with melamine powder |