| Patents for C10C 3 - Working-up pitch, asphalt, bitumen (3,502) |
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| 03/10/1992 | US5095055 Using branched polymers to improve the storage stability of acid treated polymer modified asphalts (PNE-577) |
| 03/03/1992 | US5093216 Phosphorus-containing; great capability of doping lithium |
| 02/26/1992 | CN1058985A Bitumen and its preparation |
| 02/26/1992 | CN1015634B Road bitumen producing process with decompressed residuum from pipeline-transported crude oil |
| 02/25/1992 | US5091072 Continuous process for preparing a high softening point pitch for manufacturing carbon fibers |
| 02/25/1992 | CA1296279C Cracking process for solid asphalts |
| 02/06/1992 | DE4024660A1 Working-up tar and pitch residues - to a consistency for easy transport to incineration plants |
| 02/04/1992 | CA1295208C Multigrade asphalt cement product and process |
| 01/22/1992 | EP0467484A1 Process for separating polar and non-polar constituents from coal tar distillates |
| 12/24/1991 | US5075361 Aminoacid phosphoalkylation of asphaltenes for compatibilization in bituminous liquids |
| 12/18/1991 | EP0461694A1 Process for deasphalting and demetallizing crude petroleum or its fractions |
| 12/18/1991 | CN1015111B Process for preparation of bitumen |
| 12/14/1991 | CA2025642A1 Process and apparatus for treating asphaltic substance |
| 12/05/1991 | CA2043488A1 Process for deasphalting and demetallizing crude petroleum or its fractions |
| 12/04/1991 | EP0459811A2 Use of catalytically oxidised asphalt precursors as rutting reducing additives in paving asphalt cements |
| 12/03/1991 | US5070123 Method for improving the storage stability of polymer modified asphalt |
| 11/27/1991 | CN2089476U Forced circulate pitch dewatering and temp. raising device |
| 11/19/1991 | US5066779 Polymerizing Naphthalene Using An Aluminum Chloride Catalyst |
| 11/19/1991 | US5066384 Process for refining coal-derived heavy carbonaceous materials |
| 11/14/1991 | WO1991017228A1 Improved bitumen emulsions |
| 11/13/1991 | EP0456278A1 Process for producing meso-carbon microbeads |
| 11/12/1991 | US5064581 Method of making elastic carbon fibers |
| 10/30/1991 | CN2087620U Heating device for asphalt residual oil |
| 10/22/1991 | US5059300 Asphalts modified by solvent deasphalted bottoms and phosphoric acid |
| 10/16/1991 | EP0451799A1 Method for preparing pitch fluoride |
| 10/01/1991 | US5053279 Granular bitumen coated with carbon black or silica |
| 10/01/1991 | US5053118 Bitumen extraction from asphalt pavements |
| 09/25/1991 | EP0448425A1 Method of producing bituminous compositions by extrusion |
| 09/18/1991 | EP0447280A1 Bituminous compositions containing thermoplastic polymers residues with polyurethane foams and thermoset resins, and method for their manufacture |
| 09/03/1991 | CA1288377C Extraction process and apparatus |
| 08/28/1991 | EP0443932A1 Bituminous compositions containing hydrolysed or alcoholysed polymer residues |
| 08/22/1991 | CA2036800A1 Process for extrusion fabricating of bituminous compositions |
| 08/22/1991 | CA2036798A1 Bituminous compositions containing thermoplastic polymer residues with polyurethane forms and thermoset resins and process for their fabrication |
| 08/22/1991 | CA2036576A1 Bituminous compositions containing hydrolized on alcoolized polymer residues |
| 08/13/1991 | US5039342 From reaction with unsaturated monomers in presence of coordinatioin catalysts |
| 07/31/1991 | EP0439232A1 A method of preparing rubber bitumen and asphalt |
| 07/24/1991 | CN1053255A Method and equipment for melting heat conducting oil and heating anti-corrosion asphalt |
| 07/23/1991 | US5034119 Non-carcinogenic bright stock extracts and deasphalted oils |
| 07/18/1991 | DE4000737A1 Prepn. of charge-transfer mesophase from coal tar or coal tar pitch - by reacting isotropic aromatic mixt. having raised electron-acceptor or electron-donor potential, with electron donor or electron acceptor |
| 07/16/1991 | US5032250 Solvent extraction |
| 07/11/1991 | DE4000174A1 Charge-transfer mesophase prodn. from coal tar and cyclic aromatics - by mixing isotropic aromatics with electron-donating or -accepting cpds. and treating, opt. at elevated temp. |
| 07/10/1991 | EP0436268A1 Process for producing clean distillate pitch and/or mesophase pitch for use in the production of carbon fibers |
| 07/09/1991 | CA1285897C Process for the desalination of coal tars and coal-tar pitches |
| 07/03/1991 | EP0434944A1 Bitumen granules and process for their production |
| 07/02/1991 | CA1285350C High strength asphalt cement paving composition |
| 06/30/1991 | WO1991009907A1 Polymer and asphalt reaction process and polymer-linked-asphalt product |
| 06/30/1991 | CA2072579A1 Polymer and asphalt reaction process and polymer-linked-asphalt product |
| 06/22/1991 | CA2032764A1 Bitumen granulate and a process for its preparation |
| 06/12/1991 | EP0252104B1 Process for the production of bitumens of a high penetration value, apparatus for carrying it out, and products thus obtained |
| 06/05/1991 | EP0430689A1 Mesophase pitch for use in the making of carbon materials |
| 06/05/1991 | CN2078430U Heat-exchanger of squirrel-cage low-noise mixer |
| 06/05/1991 | CN2078320U Cauldron type asphalt quick-heating pot |
| 05/29/1991 | EP0428799A1 Improved process for the production of mesophase pitch |
| 05/22/1991 | CN2077443U Energy-saving heater for asphalt |
| 05/16/1991 | DE4034319A1 Polymer-modified bitumen, useful for road-building etc. - by mixing bitumen with polybutadiene(s) and sulphur for up to 12 hours. at 160-230 deg. C |
| 05/15/1991 | CN2077082U Refraction burner for mixed material heating |
| 05/08/1991 | EP0425527A1 Process for manufacturing a bituminous binder modified with a thermoplastic for building materials. |
| 05/08/1991 | CN2076637U Burner for powdered coal |
| 05/02/1991 | EP0424550A1 Process for preparing mixtures of asphalt and a filler or for spreading asphalt on a surface |
| 05/02/1991 | EP0424420A1 Process for preparing bitumen-rubber compositions. |
| 04/30/1991 | US5011594 Process for the continuous extraction of mixtures of organic substances with supercritical solvents |
| 04/10/1991 | EP0421683A1 Method of reducing H2S in asphalt |
| 04/10/1991 | CN1050551A Quick heating device for asphalt |
| 04/02/1991 | USH907 Process for producing conductive graphite fiber |
| 04/02/1991 | CA1282364C Deasphalting process including energy recovery in the course of the separation of deasphalted oil and deasphalting solvent |
| 03/27/1991 | EP0418514A1 Carbonaceous material and a non-aqueous electrochemical cell using the same |
| 03/20/1991 | EP0418158A1 Process and device for manufacturing modified road binders |
| 03/19/1991 | US5000835 Method of reducing H2 S in asphalt |
| 03/12/1991 | US4999099 Process for making mesophase pitch |
| 03/06/1991 | CN2072536U Pitch-extracting device with local heating |
| 03/05/1991 | US4997542 Impregnation pitch with improved filterability and process for its manufacture |
| 02/27/1991 | CN2072082U Device for continuous dehydration and temp rising of asphalt |
| 02/26/1991 | US4996037 Using wiped film evaporator |
| 02/26/1991 | US4996009 Preparation of carbon microballoons |
| 02/19/1991 | US4994149 Diluent substitution apparatus |
| 02/13/1991 | CN2071183U Complex heating asphalt device by solar energy-heat conducting oil |
| 02/13/1991 | CN1049177A Making method of carbon monoxide and hydrogen mixed gas fuel |
| 02/13/1991 | CN1011592B Method for hydrogenation of coal tar pitch |
| 01/29/1991 | US4988492 For preparation of carbon fibers, melt spinning pitch, heat treatment |
| 01/29/1991 | CA1279598C Process for the preparation of bitumen |
| 01/29/1991 | CA1279597C Process for the preparation of a hydrocarbonaceous distillate and a residue, and bitumen compositions containing a residue thus prepared |
| 01/29/1991 | CA1279446C Method and apparatus for foaming of bitumen |
| 01/23/1991 | EP0409683A1 Bitumen/polymer composition with a stable adhesiveness when stored at high temperature and method of its manufacture |
| 01/22/1991 | US4986895 Process for treating coal tar or coal tar pitch |
| 01/22/1991 | US4986893 Process for producing pitch for carbon materials |
| 01/10/1991 | WO1991000315A1 Bitumen/polymer composition with an adhesive strength preserved during storage at high temperature and process for its preparation |
| 01/02/1991 | CA1278543C Low solids content, coal tar based impregnating pitch |
| 12/11/1990 | US4977023 Controlled elongation |
| 12/11/1990 | US4976845 Heat treatment, shaping into thin film, homogenizing, devolatilization of pitches from coal tar or crude oil |
| 12/05/1990 | CN2066859U Asphalt emulsifying machine |
| 12/04/1990 | US4975176 Process for the production of bitumens of a high penetration value, apparatus for carrying it out, and products thus obtained |
| 11/28/1990 | CN1047369A Asphalted oil pump to against overflow |
| 11/27/1990 | WO1990014094A1 Injectable clarithromycin composition |
| 11/27/1990 | CA2056445A1 Injectable clarithromycin composition |
| 11/20/1990 | US4971679 Plasticizer and method of preparing pitch for use in carbon and graphite production |
| 11/13/1990 | US4970025 Nitrogen-containing emulsifier and phosphonate sequestrant |
| 10/24/1990 | EP0393724A1 Process for preparing mesophase pitches |
| 10/09/1990 | US4961837 Process for the production of petroleum tar pitch for use as a binder in the production of electrodes |
| 09/25/1990 | US4959139 Binder pitch and method of preparation |
| 09/19/1990 | CN2062334U Asphalt tube releasing device |