| 
            
              US2681302A
              (en)
            
            *
            
           | 
           | 
          1954-06-15 | 
           | 
          Separ  | 
        
        
          | 
            
              US2663671A
              (en)
            
            *
            
           | 
           | 
          1953-12-22 | 
           | 
          Method of breaking a urea complex  | 
        
        
          | 
            
              US2739144A
              (en)
            
            *
            
           | 
           | 
          1956-03-20 | 
           | 
          Iio hsvm  | 
        
        
          | 
            
              US2731455A
              (en)
            
            *
            
           | 
           | 
          1956-01-17 | 
           | 
          Pour point reduction of petroleum oil  | 
        
        
          | 
            
              US2732413A
              (en)
            
            *
            
           | 
           | 
          1956-01-24 | 
           | 
          Process for the recovery of benzene by  | 
        
        
          | 
            
              US2681303A
              (en)
            
            *
            
           | 
           | 
          1954-06-15 | 
           | 
          separation of hydrocarbons and hydrocarbon  | 
        
        
          | 
            
              US2695283A
              (en)
            
            *
            
           | 
           | 
          1954-11-23 | 
           | 
          Method of forming urea and tfflourea  | 
        
        
          | 
            
              US2719145A
              (en)
            
            *
            
           | 
           | 
          1955-09-27 | 
           | 
          Process for effecting complex  | 
        
        
          | 
            
              US2681334A
              (en)
            
            *
            
           | 
           | 
          1954-06-15 | 
           | 
          Formation of urea complexes with  | 
        
        
          | 
            
              US2653147A
              (en)
            
            *
            
           | 
           | 
          1953-09-22 | 
           | 
          Separation process  | 
        
        
          | 
            
              US2735843A
              (en)
            
            *
            
           | 
           | 
          1956-02-21 | 
           | 
          weedman  | 
        
        
          | 
            
              US2663703A
              (en)
            
            *
            
           | 
           | 
          1953-12-22 | 
           | 
          Purification of stkaight-chain  | 
        
        
          | 
            
              US2658060A
              (en)
            
            *
            
           | 
           | 
          1953-11-03 | 
           | 
          Process for centrifugal separation  | 
        
        
          | 
            
              US2681335A
              (en)
            
            *
            
           | 
           | 
          1954-06-15 | 
           | 
          Gorin  | 
        
        
          | 
            
              US2653122A
              (en)
            
            *
            
           | 
           | 
          1953-09-22 | 
           | 
          Fractional separation of oil with a complexing agent  | 
        
        
          | 
            
              US2632002A
              (en)
            
            *
            
           | 
           | 
          1953-03-17 | 
           | 
          Countercurkent sltjbb  | 
        
        
          | 
            
              US2759918A
              (en)
            
            *
            
           | 
           | 
          1956-08-21 | 
           | 
          Gorin  | 
        
        
          | 
            
              US2653123A
              (en)
            
            *
            
           | 
           | 
          1953-09-22 | 
           | 
          Continuous process for separation  | 
        
        
          | 
            
              US2676141A
              (en)
            
            *
            
           | 
           | 
          1954-04-20 | 
           | 
          Process fok  | 
        
        
          | 
            
              US2666048A
              (en)
            
            *
            
           | 
           | 
          1954-01-12 | 
           | 
          Separation of low molecular weight  | 
        
        
          | 
            
              US2804451A
              (en)
            
            *
            
           | 
           | 
          1957-08-27 | 
           | 
          Urea adducts of organic sulfur  | 
        
        
          | 
            
              US2698321A
              (en)
            
            *
            
           | 
           | 
          1954-12-28 | 
           | 
          Flash  | 
        
        
          | 
            
              US2759915A
              (en)
            
            *
            
           | 
           | 
          1956-08-21 | 
           | 
          Gorin  | 
        
        
          | 
            
              US2672457A
              (en)
            
            *
            
           | 
           | 
          1954-03-16 | 
           | 
          Pbocess for the decomposition of  | 
        
        
          | 
            
              US2676167A
              (en)
            
            *
            
           | 
           | 
          1954-04-20 | 
           | 
          Separation process  | 
        
        
          | 
            
              US2640051A
              (en)
            
            *
            
           | 
           | 
          1953-05-26 | 
           | 
          Process for the decomposition of  | 
        
        
          | 
            
              US2642424A
              (en)
            
            *
            
           | 
           | 
          1953-06-16 | 
           | 
          Method of separating hydrocarbons  | 
        
        
          | 
            
              US2689845A
              (en)
            
            *
            
           | 
           | 
          1954-09-21 | 
           | 
          Sepakating organic compounds  | 
        
        
          | 
            
              US2774752A
              (en)
            
            *
            
           | 
           | 
          1956-12-18 | 
           | 
          Process for treating hydrocarbons with thiourea  | 
        
        
          | 
            
              US2716113A
              (en)
            
            *
            
           | 
           | 
          1955-08-23 | 
           | 
          Separation process  | 
        
        
          | 
            
              US2731456A
              (en)
            
            *
            
           | 
           | 
          1956-01-17 | 
           | 
          Sub-zone   | 
        
        
          | 
            
              US2642423A
              (en)
            
            *
            
           | 
           | 
          1953-06-16 | 
           | 
          Charge  | 
        
        
          | 
            
              US2685578A
              (en)
            
            *
            
           | 
           | 
          1954-08-03 | 
           | 
          Hydrocarbon separation process  | 
        
        
          | 
            
              US2642422A
              (en)
            
            *
            
           | 
           | 
          1953-06-16 | 
           | 
          Gorin  | 
        
        
          | 
            
              US2759917A
              (en)
            
            *
            
           | 
           | 
          1956-08-21 | 
           | 
          Recovery of cyclohexane and methyl  | 
        
        
          | 
            
              US2569985A
              (en)
            
            *
            
           | 
          1948-02-16 | 
          1951-10-02 | 
          Shell Dev | 
          Thiourea-ketone complexes 
        | 
        
        
          | 
            
              US2594481A
              (en)
            
            *
            
           | 
          1948-09-30 | 
          1952-04-29 | 
          Standard Oil Co | 
          Separation of alcohols 
        | 
        
        
          | 
            
              US2637681A
              (en)
            
            *
            
           | 
          1948-12-09 | 
          1953-05-05 | 
          Texas Co | 
          Fractional separation of wax from a hydrocarbon mixture using an organic complexing agent and a solvent 
        | 
        
        
          | 
            
              US2606140A
              (en)
            
            *
            
           | 
          1948-12-30 | 
          1952-08-05 | 
          Texas Co | 
          Separation of wax constituents and the like from oil 
        | 
        
        
          | 
            
              US2635986A
              (en)
            
            *
            
           | 
          1949-02-10 | 
          1953-04-21 | 
          Texas Co | 
          Continuous process for separation of waxlike constituents from oil 
        | 
        
        
          | 
            
              US2604430A
              (en)
            
            *
            
           | 
          1949-02-24 | 
          1952-07-22 | 
          Texas Co | 
          Continuous process for separation of waxlike constituents from oil 
        | 
        
        
          | 
            
              US2661317A
              (en)
            
            *
            
           | 
          1949-03-17 | 
          1953-12-01 | 
          Texas Co | 
          Separation of wax constituents and the like from oil 
        | 
        
        
          | 
            
              US2666020A
              (en)
            
            *
            
           | 
          1949-06-07 | 
          1954-01-12 | 
           | 
          Sepaeation of wax-like constituents  | 
        
        
          | 
            
              US2642378A
              (en)
            
            *
            
           | 
          1949-09-13 | 
          1953-06-16 | 
          Socony Vacuum Oil Co Inc | 
          Separation of wax from residual lubricating oil 
        | 
        
        
          | 
            
              US2642379A
              (en)
            
            *
            
           | 
          1949-09-13 | 
          1953-06-16 | 
          Socony Vacuum Oil Co Inc | 
          Separation of wax and asphalt from hydrocarbon oil 
        | 
        
        
          | 
            
              US2599130A
              (en)
            
            *
            
           | 
          1949-09-19 | 
          1952-06-03 | 
          Marathon Corp | 
          Laminated sheet material 
        | 
        
        
          | 
            
              US2577202A
              (en)
            
            *
            
           | 
          1949-09-30 | 
          1951-12-04 | 
           | 
          Process for separating organic  | 
        
        
          | 
            
              US2606214A
              (en)
            
            *
            
           | 
          1949-09-30 | 
          1952-08-05 | 
          Standard Oil Co | 
          Method of removing inhibitors for urea adduct formation 
        | 
        
        
          | 
            
              US2773858A
              (en)
            
            *
            
           | 
          1950-03-27 | 
          1956-12-11 | 
          Manuel H Gorin | 
          Method of preparing expanded urea 
        | 
        
        
          | 
            
              US2723220A
              (en)
            
            *
            
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          1950-04-10 | 
          1955-11-08 | 
          Phillips Petroleum Co | 
          Dewaxing of lubricating oil 
        | 
        
        
          | 
            
              US2758108A
              (en)
            
            *
            
           | 
          1950-04-10 | 
          1956-08-07 | 
          Phillips Petroleum Co | 
          Preparation of adduct of urea or thiourea in the presence of an aqueous solution of monoethylamine 
        | 
        
        
          | 
            
              GB714327A
              (en)
            
            *
            
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          1950-05-17 | 
          1954-08-25 | 
          Anglo Iranian Oil Co Ltd | 
          Improvements in or relating to the production of urea in finely divided form and to the refining of petroleum by means of urea in finely divided form 
      | 
        
        
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              US2618665A
              (en)
            
            *
            
           | 
          1950-07-29 | 
          1952-11-18 | 
          Texas Co | 
          Process for isolating phenolic compounds from mixtures thereof 
        | 
        
        
          | 
            
              US2618664A
              (en)
            
            *
            
           | 
          1950-07-29 | 
          1952-11-18 | 
          Texas Co | 
          Process for isolating phenolic compounds from mixtures thereof 
        | 
        
        
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              US2744887A
              (en)
            
            *
            
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          1950-08-03 | 
          1956-05-08 | 
          Phillips Petroleum Co | 
          Decomposing urea adducts by countercurrently contacting the urea adduct with a hot gas, removing the urea fines and recycling the larger urea particles 
        | 
        
        
          | 
            
              US2766269A
              (en)
            
            *
            
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          1950-10-24 | 
          1956-10-09 | 
          British Petroleum Co | 
          Production of esters 
        | 
        
        
          | 
            
              US2700664A
              (en)
            
            *
            
           | 
          1950-11-17 | 
          1955-01-25 | 
          Phillips Petroleum Co | 
          Separation of organic compounds by adduct formation 
        | 
        
        
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              FR1057344A
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            *
            
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          1952-05-24 | 
          1954-03-08 | 
           | 
           | 
        
        
          | 
            
              GB737235A
              (en)
            
            *
            
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          1952-09-17 | 
          1955-09-21 | 
          Metallgesellschaft Ag | 
          Method of carrying out polymerisation reactions 
      | 
        
        
          | 
            
              US2798102A
              (en)
            
            *
            
           | 
          1952-10-25 | 
          1957-07-02 | 
          Union Oil Co | 
          Method of decomposing werner complex clathrates 
        | 
        
        
          | 
            
              BE525458A
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            *
            
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          1952-12-31 | 
          1900-01-01 | 
           | 
           | 
        
        
          | 
            
              US2779710A
              (en)
            
            *
            
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          1953-07-01 | 
          1957-01-29 | 
          Sonneborn Sons Inc L | 
          Process of upgrading petrolatum 
        | 
        
        
          | 
            
              US2799623A
              (en)
            
            *
            
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          1953-07-16 | 
          1957-07-16 | 
          Ashland Oil Inc | 
          Process for separating waxes from oil 
        | 
        
        
          | 
            
              US2801993A
              (en)
            
            *
            
           | 
          1953-08-11 | 
          1957-08-06 | 
          Rosenstein Ludwig | 
          Expanded thiourea 
        | 
        
        
          | 
            
              NL98702C
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            *
            
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          1953-09-23 | 
          1961-08-15 | 
           | 
           | 
        
        
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              US2849513A
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            *
            
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          1953-12-07 | 
          1958-08-26 | 
          Union Oil Co | 
          Separation of hydrocarbons by clathrate formation with werner complex compounds 
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              FR1104947A
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          1954-05-19 | 
          1955-11-25 | 
           | 
           | 
        
        
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              AT195003B
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            *
            
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          1954-09-18 | 
          1958-01-25 | 
          Edeleanu Gmbh | 
          Verfahren und Vorrichtung zur Abscheidung der mit Harnstoff bzw. Thioharnstoff Addukte bildenden Paraffine aus Kohlenwasserstoffölen 
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              DE957328C
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            *
            
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          1954-11-27 | 
          1957-01-31 | 
          Edeleanu Gmbh | 
          Verfahren zur kontinuierlichen Abtrennung von Paraffinen aus Kohlenwasserstoffoelen durch Adduktbildung 
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              DE1049032B
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          1955-04-29 | 
          1959-01-22 | 
          Oelwerke Julius Schindler G M | 
          Verfahren zum kontinuierlichen Entparaffinieren von Kohlenwasserstoffoelen mittels Harnstoffaddukten 
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              US2906744A
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            *
            
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          1956-03-15 | 
          1959-09-29 | 
          Standard Oil Co | 
          Insecticidal compositions 
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              DE1030491B
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            *
            
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          1956-03-31 | 
          1958-05-22 | 
          Scholven Chemie Ag | 
          Verfahren zur Trennung von Stoffgemischen mittels Harnstoff unter Verwendung eines Verduennungsmittels 
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              US3132084A
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            *
            
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          1960-09-23 | 
          1964-05-05 | 
          Texaco Inc | 
          Complex forming dewaxing composition and process 
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              CN109096034B
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          2018-07-17 | 
          2021-09-03 | 
          天津大学 | 
          反应分离耦合分离正构烃与异构烃的工艺与装置 
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