| 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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| 11/28/1978 | CA1043349A1 Therapeutic 1-hydroxyaryl-2-amidoalkylaminoethanol derivatives |
| 11/21/1978 | US4126461 Black-and-white photographic elements and processes |
| 11/14/1978 | CA1042462A1 Process for the manufacture of ureas |
| 11/07/1978 | US4124569 Process for the preparation of polyisocyanates containing urethane and biuret groups |
| 10/31/1978 | US4123461 Chlorination of benzene-tricarboxylic acid (1,3,5)-triamide, intermediate for production of phloroglucinol |
| 10/24/1978 | US4122090 Cyclic esters of 3,4-dihydroxy-thiophene-1,1-dioxide compounds and 3,4-dihydroxy-cyclopentadienone compounds |
| 10/10/1978 | US4119782 Catalytic hydrogenation in the presence of alkali hydroxide |
| 10/10/1978 | CA1040215A1 Method of controlling water content in urea reactions |
| 09/19/1978 | US4115449 Decomposing ammonium carbamate |
| 09/19/1978 | US4115445 Process for the preparation of trisubstituted ureas |
| 09/19/1978 | US4115409 Cardiovascular disorders |
| 08/29/1978 | US4110374 Process for separating and recovering unreacted materials in urea synthesis |
| 08/22/1978 | CA1036933A1 Anilide urea biocides |
| 08/08/1978 | US4105417 Hydrocarbyl phenyl urea, n-hydrocarbyl acetamide of ethylenediamine or hydrocarbyl-1-aminoethyl oxoimidazolidone |
| 07/25/1978 | US4102885 Process for preparing 2,4-dihaloquinazolines |
| 07/04/1978 | US4098933 Process for the production of water-soluble or water-dispersible blocked polyisocyanates |
| 07/04/1978 | US4098579 Installation for conducting a synthesis reaction of urea |
| 06/20/1978 | US4096118 Process for the production of amino silicate compounds and their resinous products |
| 06/13/1978 | US4094903 Urea synthesis with improved heat recovery and conversion |
| 05/30/1978 | US4092358 Process for the production of urea having a low carbamate content |
| 05/09/1978 | US4088686 Urea synthesis with improved heat recovery and conversion |
| 05/09/1978 | US4088685 From ammonia and carbon dioxide, ammonium carbonate |
| 05/09/1978 | US4088684 From ammonia and carbon dioxide, ammonium carbamate decomposition |
| 05/09/1978 | US4088665 Process for the partial carbodiimidization of organic isocyanates |
| 05/02/1978 | US4087513 Method of hydrolyzing urea contained in waste water streams |
| 04/25/1978 | US4086357 Amide derivatives |
| 04/25/1978 | US4086271 Urea synthesis with improved heat recovery and conversion |
| 04/25/1978 | US4086246 Reaction of phosgene with a phenol and primary amine |
| 04/18/1978 | US4085268 Disubstituted s-triazines |
| 04/04/1978 | US4082797 Method for the condensation of carbammate in urea-synthesis installations |
| 03/28/1978 | US4081469 Process for separating and recovering unreacted materials in urea synthesis |
| 02/07/1978 | US4072702 Improves mechanical properties |
| 01/17/1978 | US4069253 Process for the production of water-free molten urea |
| 01/03/1978 | US4066693 Process for the preparation of urea |
| 01/03/1978 | US4066440 Herbicides, fungicides and bactericides |
| 12/27/1977 | US4065353 Imidazole-diones, enzymatic hydrolysis |
| 12/13/1977 | US4063021 Method for the synthesis of ureas |
| 12/13/1977 | US4062890 From urea and isobutyraldehyde |
| 12/06/1977 | US4061675 Process for the synthesis of urea from carbon dioxide and ammonia |
| 11/08/1977 | US4057588 Process for the preparation of phloroglucinol |
| 10/25/1977 | US4055598 Process for preparation of urea autocondensation product |
| 10/11/1977 | US4053508 Process and installation for preparing urea from ammonia and carbon dioxide |
| 10/11/1977 | US4053507 Method of recovering unreacted materials and heat in urea synthesis |
| 10/04/1977 | US4052503 Low-temperature synthesis of urea |
| 10/04/1977 | US4052454 Process for the manufacture of ureas |
| 09/27/1977 | US4051165 Preparation of biuret polyisocyanates |
| 08/23/1977 | US4044052 Process for recovery of urea from its phenolic solution |
| 08/23/1977 | US4043992 Method for preparing acylated products |
| 08/16/1977 | US4042626 Integrated two-stage urea synthesis |
| 08/02/1977 | US4039577 Agriculture |
| 07/19/1977 | US4036878 Process for preparing urea |
| 07/19/1977 | US4036850 1-Aryl-5-alkylidene,2,4-dioxo-imidazolidines and process therefor |
| 05/10/1977 | US4022825 Imidol isomer of N-chloroformamido and its process of preparation |
| 03/22/1977 | US4013718 Integrated process for the production of urea |
| 03/22/1977 | US4013706 From a cyanamide; acid catalyst |
| 03/22/1977 | US4013431 Partial or complete separation of gas mixtures, containing ammonia and carbon dioxide |
| 03/15/1977 | US4012443 Integrated urea-ammonia process |
| 03/01/1977 | US4010189 Alkanolamine derivatives |
| 02/15/1977 | US4008071 Adducts of carbamoyl sulphoxides |
| 02/15/1977 | US4008064 Method of pan granulation |
| 02/08/1977 | US4007175 Herbicide |
| 02/01/1977 | US4006253 Cellulose, mineral acid, urea |
| 01/18/1977 | US4003928 Process for the preparation of urea |
| 01/18/1977 | US4003801 Treatment of water vapor generated in concentrating an aqueous urea solution |
| 01/04/1977 | US4001320 Method for controlling the ammonia and CO2 ratios in a urea manufacturing process |
| 01/04/1977 | US4001290 Lacquers, coatings, adhesives, telomers, foam plastics |
| 11/30/1976 | US3994714 N-(3-chloro-4-methoxyphenyl)-n*,n*-dimethylurea |
| 11/16/1976 | US3992432 Phase transfer catalysis of heterogeneous reactions by quaternary salts |
| 10/12/1976 | US3985711 Metal wire coatings |
| 10/05/1976 | US3984469 Process for the production of urea |
| 09/28/1976 | US3983169 Cardioselective blocking agents |
| 09/28/1976 | US3983043 Mixtures of methylolalkyl ureas and their butyl ethers |
| 09/21/1976 | US3981684 Apparatus for controlling urea system |
| 09/07/1976 | US3979392 Method of separating liquid drops from a gas stream |
| 08/24/1976 | US3976622 Polyurethanes |
| 08/03/1976 | US3972933 Preparation of carbodiimides from ureas by dehydration |
| 07/06/1976 | US3968158 From fluorine and guanidine or salts |
| 06/29/1976 | US3966725 1-(4-Phenoxy-phenyl)-1,3,5-triazines |
| 06/15/1976 | US3963728 Method for preparing acylated products |
| 06/08/1976 | US3962329 Manufacture of granular isobutylidenediurea |
| 05/25/1976 | US3959369 Alkanolamine derivatives |
| 05/18/1976 | US3957868 Stripping, heat exchanging, circulation |
| 05/11/1976 | US3956468 Process for the preparation of carbonyldiisocyanate |
| 05/04/1976 | US3954861 Process for producing urea |
| 05/04/1976 | US3954825 From a polyamine and a polyisocyanate |
| 05/04/1976 | US3954598 Purification of aqueous urea solutions in a urea dewaxing process |
| 04/20/1976 | US3952055 Adiabatic, from ammonia and carbon dioxide |
| 03/23/1976 | US3946073 Process for preparation of urea autocondensation product |
| 03/16/1976 | US3944611 Ethanolamine derivatives |
| 03/16/1976 | US3944605 Method of recovering unreacted ammonium carbamate in urea synthesis |
| 03/02/1976 | US3941873 Process for the preparation of carbonyl diisocyanate |
| 02/24/1976 | US3940440 Method of controlling urea system |
| 02/17/1976 | US3938531 Smoking material and the process of making the same |
| 02/10/1976 | US3937728 Phosgene, ammonia, ammonium chloride, separation, methanol, solvent extraction |
| 02/10/1976 | US3937727 Process for preparing n, n-dimethylurea |
| 02/03/1976 | US3936501 Process for the manufacture of crystalline urea phosphate |
| 02/03/1976 | US3936500 Process for preparing urea |
| 02/03/1976 | US3936499 Crystallization, melting, heterogenous, pelleting |
| 01/27/1976 | US3935260 Auto-condensation products of urea |
| 01/20/1976 | US3933911 Beta-adrenergic stimulants |