| 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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| 03/20/1997 | WO1997010206A1 Process for the preparation of arylalkynyl-n-hydroxyurea derivatives having lipoxygenase inhibitory activity |
| 03/04/1997 | US5607977 Benzoylureas |
| 02/26/1997 | CN1143631A Process for preparing crystallization O-isopropyl isourea-hydrochloride |
| 02/20/1997 | WO1997006135A1 Process for producing carbamoylmethylurea derivatives |
| 02/20/1997 | WO1997006134A1 Method for preparing n,n-dimethyl-n'-phenylureas |
| 02/20/1997 | CA2228622A1 Process for producing carbamoylmethylurea derivatives |
| 02/12/1997 | CN1142490A Method for synthesizing biuret by liquid phase process |
| 02/12/1997 | CN1034014C Process and plant for production of urea with differentiated yield reaction spaces |
| 02/11/1997 | US5602275 May be used to accelerate recovery from neutropenia accompanying radio- or chemotherapy, bone marrow transplantation or infections |
| 02/05/1997 | CN1141913A High-output synthesis of urea |
| 02/04/1997 | US5599994 Chemical intermediates for protease inhibitors |
| 01/30/1997 | WO1997003044A1 Process and device for preparing (cyclo)aliphatic biuret groups-containing polyisocyanates |
| 01/30/1997 | CA2223641A1 Preparation of (cyclo)aliphatic polyisocyanates containing biuret groups |
| 01/29/1997 | CN1141287A Method for prepn. of urea |
| 01/29/1997 | CN1033911C Prodn. of urea by using agricultural ammonium bicarbonate as raw material |
| 01/28/1997 | US5597917 Method for the production of N-cyclic and N,N'-dicyclic ureas and their use as chemical solvents |
| 01/28/1997 | US5597454 Process for producing urea |
| 01/28/1997 | CA2141886E Reactor for two-phase reactions, in particular for urea synthesis at high pressure and temperature |
| 01/16/1997 | DE19525474A1 Verfahren und Vorrichtung zur Herstellung von (cyclo)aliphatische Biuretgruppen enthaltenden Polyisocyananten Method and apparatus for the production of (cyclo) aliphatic biuret containing Polyisocyananten |
| 01/08/1997 | EP0752417A1 Process for the preparation of N-alkenylureas |
| 01/08/1997 | EP0752416A1 Method and apparatus for recovering condensables in vapor from a urea vacuum evaporator |
| 01/08/1997 | CN1139669A Synthesis method for urea containing two separated reaction zones |
| 01/08/1997 | CN1139666A Novel tricyclic amide, its preparation method and medicinal combination |
| 01/07/1997 | US5591775 Sleep disorders |
| 01/02/1997 | EP0751122A2 Process for the preparation of crystalline O-isopropyl isourea-hydrochloride |
| 01/02/1997 | EP0751121A2 Process for the synthesis of urea comprising two separate reaction zones |
| 01/02/1997 | EP0751119A1 A process for preparing acryloyl carbamates or ureas |
| 12/28/1996 | CA2179858A1 Process for the preparation of crystalline o-isopropylisourea hydrochloride |
| 12/18/1996 | EP0748801A1 2-isoxazoline derivative and process for producing the same, and process for producing related derivatives from the same |
| 12/18/1996 | EP0748794A1 Integrated urea/ammonia process |
| 12/18/1996 | CN2242728Y Urea-synthesizing combined device |
| 12/12/1996 | WO1996039382A1 Urea derivatives as 5-ht antagonists |
| 12/11/1996 | CN1137516A Improved reactor for synthesis of urea |
| 12/04/1996 | EP0745586A1 Aryl(alkyl) propylamides, process for their preparation and pharmaceutical compositions containing them |
| 12/03/1996 | US5580236 Plant for urea production |
| 11/13/1996 | EP0741702A1 Process for preparing 2-oxindole-1-carboxamides |
| 11/13/1996 | CN1135480A Alkyl heterocyclic compound and preparation method thereof, and medicinal composition containing that kind of compound |
| 11/12/1996 | US5573735 Method of retrofitting urea production plant |
| 11/12/1996 | US5573734 Plant for the production of urea in reaction spaces with different yields |
| 11/06/1996 | CN1134938A Novel alkylated (hetero) cyclic compounds, process for their prepn. and pharmaceutical compositions contg. same |
| 10/22/1996 | CA1338669C Substituted aryl ureas as high potency sweeteners |
| 10/17/1996 | DE19612031A1 N-acyloxyalkyl amides prepn. by electrochemical oxidn. of amides in presence of carboxylic acids |
| 10/16/1996 | EP0737670A1 Tricyclic amides, processes for their preparation, and pharmaceutical compositions containing them |
| 09/26/1996 | DE19523169C1 Prodn. of acryloyl-carbamate and acryloyl-urea cpds. |
| 09/11/1996 | EP0730570A1 Method for making intermediates useful in synthesis of retroviral protease inhibitors |
| 09/03/1996 | US5552418 Trisubstituted Naphthylalkylamides |
| 08/27/1996 | US5550206 Polyamines containing urea groups |
| 08/22/1996 | WO1996025444A1 Process for producing polyisocyanates containing biuret groups |
| 08/22/1996 | DE19505035A1 Verfahren zur Herstellung biurethgruppen-haltigen Polyisocyanaten A process for preparing polyisocyanates containing biurethgruppen |
| 08/22/1996 | CA2211025A1 Preparation of biuret-containing polyisocyanates |
| 08/21/1996 | EP0727414A1 High yield process for urea synthesis |
| 08/17/1996 | CA2168505A1 High yield process for urea synthesis |
| 08/13/1996 | US5545662 Used to accelerate recovery from neutropenia accompanying radio or chemotherapy, bone marrow transplantation, or infections |
| 08/08/1996 | WO1996023767A1 Process and plant for the production of urea with high conversion yield and low energy consumption |
| 08/07/1996 | EP0725057A1 Alkylsulfonyl or alkylaminocarbonyl substituted lysine derivatives, process for their preparation, their use especially in cosmetics and compositions containing them |
| 08/07/1996 | CN1128256A Preparation of biuret-containing polyisocyanates |
| 08/01/1996 | CA2168411A1 Lysin derivatives; process for preparing the same; use thereof and compositions containing the same |
| 07/17/1996 | EP0721947A1 Alkyl(hetero)cyclic compounds, process for their preparation and pharmaceutical compositions containing them |
| 07/17/1996 | EP0721938A1 Alkyl(hetero)cyclic compounds, process for their preparation and pharmaceutical compositions containing them |
| 07/04/1996 | WO1996020171A1 Antiherpes peptidomimetic compounds |
| 07/04/1996 | WO1996020170A1 Process and plant for urea production with reaction spaces having differentiated yields |
| 07/04/1996 | CA2208027A1 Process and plant for urea production with reaction spaces having differentiated yields |
| 07/03/1996 | CN1125720A Novel polyamines containing urea groups |
| 06/26/1996 | CN1125226A Equipment for preparation of urea inclusion enclave by dewatering carrier belt method |
| 06/26/1996 | CN1125225A method for preparation of urea inclusion enclave by dewatering carrier belt |
| 06/19/1996 | EP0653961B1 Process for the production of urea granules |
| 06/18/1996 | US5527961 Process for reducing the ammonia content of a gaseous effluent from urea production plants |
| 06/12/1996 | EP0716080A1 Process for the preparation of biuret groups which contain polyisocyanates |
| 06/10/1996 | CA2163405A1 Preparation of biuret-containing polyisocyanates |
| 06/04/1996 | US5523483 Integrated urea/ammonia process |
| 06/04/1996 | US5523482 Regulating temperature in decomposition of reaction product carbamate in second phase |
| 05/30/1996 | WO1996016030A1 Iminooxymethylene anilides, process and intermediate products for preparing the same and pesticides containing the same |
| 05/30/1996 | DE4441674A1 Iminooxymethylenanilide, Verfahren und Zwischenprodukte zu ihrer Herstellung und sie enthaltende Mittel Iminooxymethylenanilide, processes and intermediates for their preparation and to compositions comprising |
| 05/30/1996 | CA2204671A1 Iminooxymethyleneanilides, preparation thereof and intermediates therefor, and compositions containing them |
| 05/23/1996 | WO1996015106A1 Aryloxycycloalkenyl and aryloxyiminocycloalkenylhydroxyureas as 5-lipoxygenase inhibitors |
| 05/22/1996 | EP0712840A1 Allophanate-groups containing polyisocyanates |
| 05/22/1996 | EP0712839A1 Process for the preparation of urea |
| 05/19/1996 | CA2162832A1 Polyisocyanates containing allophanate groups |
| 04/17/1996 | EP0706996A2 Polyamines containing urea groups |
| 04/02/1996 | US5504241 Carbodiimides and/or oligomeric polycarbodiimides based on 1,3-bis(1-methyl-1-isocyanatoethyl)benzene, their preparation, and their use as hydrolysis stabilizers |
| 03/28/1996 | WO1996009136A1 Method for restoring the functionality of equipment subjected to heavy corrosion in a plant for the production of urea |
| 03/28/1996 | WO1996001788A3 Amino acid-derived diaminopropanols |
| 03/21/1996 | WO1996008469A1 Novel synthesis of penta-substituted guanidines |
| 03/14/1996 | WO1996007474A1 Method for in-situ modernization of a urea synthesis reactor |
| 03/14/1996 | CA2198239A1 Method for in-situ modernization of a urea synthesis reactor |
| 03/12/1996 | US5498747 Carbodiimides and/or oligomeric polycarbodiimides based on 1,3-bis (1-methyl-1-isocyanatoethyl)benzene, their preparation, and their use as hydrolysis stabilizers |
| 03/06/1996 | EP0699629A2 Urea-surfactant clathrates and their use in bioremediation of hydrocarbon contaminated soils and water |
| 01/25/1996 | WO1996001788A2 Amino acid-derived diaminopropanols |
| 01/25/1996 | CA2194480A1 Amino acid-derived diaminopropanols |
| 01/24/1996 | EP0693054A1 Cycloalkylhydroxyureas and their use as lipoxygenase inhibitors |
| 01/24/1996 | EP0693053A1 Urea and amide derivatives and their use in the control of cell membrane potassium channels |
| 01/24/1996 | CN1115314A Technique for reclaiming ammonium carbonate waste liquid for production of urea |
| 01/18/1996 | DE19525235A1 Urea-modified carbodiimide(s) |
| 01/02/1996 | US5481035 Process for the preparation of asymmetrically substituted ureas, carbamates, thiocarbamates and substituted isocyanates |
| 01/02/1996 | CA1337869C Transvinylation reaction |
| 12/27/1995 | CN1113910A Producing method for urea |
| 12/20/1995 | EP0687675A2 Irreversible HIV protease inhibitors, intermediates, compositions and processes for the preparation thereof |
| 12/12/1995 | US5475138 Method preparing amino acid-derived diaminopropanols |
| 12/05/1995 | US5472981 Treating hemoglobin or blood in vivo or in vitro to modify the affinity of hemoglobin for oxygen |
| 11/28/1995 | US5470370 Complex composition resulting from the action of urea on a sulfuric sludge of petroleum origin, process for the preparation thereof and use thereof as a source of fertilizing material |