| Patents for C07C 4 - Preparation of hydrocarbons from hydrocarbons containing a larger number of carbon atoms (5,080) | 
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| 07/15/1992 | CN1017415B Substitution of cr and /or sn in place of al in the framework of molecular sieve via treatment with fluoride salts | 
| 07/01/1992 | EP0492678A2 Process and apparatus for pyrolysis of hydrocarbons | 
| 07/01/1992 | CN1062339A Process for preparation of olefins-containing mixture of hydrocarbons | 
| 06/23/1992 | US5124134 Apparatus for the conversion of hydrocarbons | 
| 06/17/1992 | EP0490435A1 Process for the preparation of an olefins-containing mixture of hydrocarbons | 
| 06/11/1992 | WO1992009366A1 Gasoline hydrocracking catalyst and process | 
| 06/11/1992 | CA2056833A1 Process for the preparation of an olefins-containing mixture of hydrocarbons | 
| 06/10/1992 | CN1061771A Process and apparatus for pyrolysis of hydrocarbons | 
| 06/09/1992 | US5120898 Using acid catalyst containing sulfate and group 8 metal | 
| 06/09/1992 | US5120893 Process for catalytically converting C10 and higher olefins to C9 and lower olefins | 
| 06/09/1992 | CA1303071C Method of thermally decomposing hydrocarbon and thermal decomposition tube | 
| 06/03/1992 | EP0457853A4 A process for the catalytic conversion of a c 9?+ aromatics feed | 
| 06/02/1992 | US5118483 Hydrorefining catalysts | 
| 05/30/1992 | CA2054600A1 Process and apparatus for pyrolysis of hydrocarbons | 
| 05/20/1992 | EP0485378A1 Improved method of refining coal by short residence time hydrodisproportionation | 
| 05/19/1992 | US5114895 Alumina clay compositions | 
| 04/28/1992 | US5108579 Nu-86; of silicon and/or germanium and aluminu, iron, gallium, boron, titanium, vanadium zirconium, molybdenum, arsenic, antimonty, chromium and/or manganese oxides | 
| 04/28/1992 | CA1299588C Process for conversion of ethylbenzene in c _aromatic hydrocarbon mixture | 
| 04/21/1992 | US5106801 Hydrocracking catalysts, adsorbants | 
| 04/08/1992 | EP0183725B1 Substituted aluminosilicate compositions and process for preparing same | 
| 03/31/1992 | CA1298318C Method for producing alkylstyrene | 
| 03/10/1992 | US5095166 Process for cracking paraffins to olefins | 
| 03/04/1992 | CN1059154A Treatment of waste polystyrene articles | 
| 03/03/1992 | US5093540 Process for selectively converting linear paraffins to linear alpha olefins | 
| 03/01/1992 | CA2024340A1 Process for the complete reprocessing of high polymer waste products | 
| 02/18/1992 | US5089459 Catalyst composition, process for cracking non-aromatic hydrocarbons and process for isomerizing c8 aromatic hydrocarbons | 
| 02/12/1992 | EP0470651A1 1,2-Di(4-isobutylphenyl) ethane and its preparation and use as intermediate | 
| 02/12/1992 | CN1015451B Method of recovering styrene monomer by cracking waste polystyrene | 
| 02/05/1992 | CN1015338B Catalytic composition for conversion of c3 and c4 hydrocarbons | 
| 01/29/1992 | CN1058196A Zeolites | 
| 01/29/1992 | CN1058195A Zeolites | 
| 01/21/1992 | US5082985 Process for controlling hydrocarbon steam cracking system using a spectrophotometer | 
| 01/15/1992 | EP0465642A1 New zeolite ssz-31 | 
| 01/15/1992 | EP0451280A4 Method and device for obtaining lower olefines | 
| 01/08/1992 | EP0152485B1 Binder-free zeolite catalyst, process for its preparation, and catalytic reaction using same | 
| 01/07/1992 | US5079385 Depolymerization of olefin wastes, production of gasoline, fuel and diesel oil, hydrocarbons | 
| 01/02/1992 | EP0463768A2 Zeolites | 
| 12/27/1991 | EP0462745A2 Zeolites | 
| 12/17/1991 | CA1293270C Co-production of aromatics and olefins from paraffinic feedstocks | 
| 12/10/1991 | US5072068 Method for retrieving styrene monomer from discarded polystyrene scrap through pyrolytic reduction | 
| 12/10/1991 | US5071817 Dehydrogenation catalyst | 
| 12/03/1991 | US5070109 Roofing and paving materials from scrap tires | 
| 11/28/1991 | WO1991017829A1 Hydrocracking catalyst and process | 
| 11/27/1991 | EP0457853A1 A process for the catalytic conversion of a c 9?+ aromatics feed. | 
| 11/14/1991 | DE4114532A1 Cracking catalysts - contains Y and beta zeolite(s), for propylene and isobutane prodn. | 
| 11/13/1991 | CN1056097A Producing ethylene from cracking butane by laser surface catalysis | 
| 11/05/1991 | US5063038 Zeolite synthesis using an alcohol or like molecule | 
| 10/22/1991 | US5059735 Heating, pressurization in the presence of a composite catalyst to convert a paraffin feedstream | 
| 10/16/1991 | EP0452084A2 Process for the conversion of propane und butane | 
| 10/16/1991 | EP0451280A1 Method and device for obtaining lower olefines | 
| 10/15/1991 | US5057295 Porous, three dimensional framework | 
| 10/01/1991 | US5053574 Hydrodealkylation of alkylaromatic compounds | 
| 10/01/1991 | US5053570 Fluid bed paraffin aromatization | 
| 09/11/1991 | EP0445969A2 Catalytic hydrodealkylation of aromatics | 
| 08/27/1991 | US5043522 Zeolite catalyst, process control, recycling unreacted feed and formed olefins, other than desired propylene or ethylene | 
| 08/27/1991 | US5043513 Zeolite catalyst | 
| 08/20/1991 | US5041402 Containing oxides of silicon and/or germanium with aluminum, iron, gallium, boron titanium, vanadium, zirconium, molybdenum, arsenic, chromium and/or manganese | 
| 08/20/1991 | US5041205 Hydrocarbon/oxygenate conversion using crystalline (metallo) silicates and germinates SUZ-2 | 
| 07/31/1991 | EP0438901A1 Conversion of C2+ hydrocarbons using microwave radiation | 
| 07/31/1991 | CN1053421A Processing method for producing phenylethylene by depolymerization of polystyrene and its production equipment | 
| 07/30/1991 | US5036159 For hydrocarbon cracking, oxidation of carbon monoxide and hydrogenation of alkenes heating | 
| 07/30/1991 | US5036035 Solid strong acid catalyst process for the production of the same and use thereof | 
| 07/27/1991 | WO1991011258A1 New zeolite ssz-31 | 
| 07/27/1991 | CA2049035A1 Zeolite ssz-31 | 
| 07/17/1991 | CN1053018A Composition for zn-al-p-si-oxide molecular sieve | 
| 07/16/1991 | US5032561 Catalyst composition for cracking non-aromatic hydrocarbons and isomerizing C8-aromatic hydrocarbons | 
| 07/09/1991 | US5030787 Catalytic disproportionation/transalkylation utilizing a C9+ aromatics feed | 
| 07/09/1991 | US5030782 Catalytic cracking, dehydrogenation, aromatization | 
| 06/27/1991 | WO1991008998A1 A process for the catalytic conversion of a c9+ aromatics feed | 
| 06/25/1991 | US5026939 Method for producing 4-isobutylstyrene | 
| 06/25/1991 | US5026936 Enhanced production of propylene from higher hydrocarbons | 
| 06/25/1991 | US5026935 Combined cracking and metathesis | 
| 06/12/1991 | EP0431990A1 Process for the production of alkylaromatic hydrocarbons from natural gas | 
| 06/05/1991 | CN1051871A Isomerization catalyst and method for use thereof | 
| 06/04/1991 | US5021148 Method of refining coal by short residence time partial liquefaction to produce petroleum substitutes and chemical feedstocks | 
| 05/29/1991 | EP0428699A1 Process and apparatus for vapour-phase cracking of hydrocarbons | 
| 05/29/1991 | CA2030983A1 Process for the production of alkylaromatic hydrocarbons from natural gaz | 
| 05/08/1991 | EP0425712A1 Isomerization catalyst and method for the use thereof | 
| 05/02/1991 | EP0424393A1 Manufacture of alkylbenzenes. | 
| 04/30/1991 | CA1283665C Method for producing p-alkylstyrene | 
| 04/30/1991 | CA1283648C Zeolite ssz-25 | 
| 04/24/1991 | CN1050893A Steam cracking feed gas saturation | 
| 04/17/1991 | EP0422341A1 Steam cracking feed gas saturation | 
| 04/16/1991 | US5008234 Vaporizing metal to form metal-ethylene complex, solidification, heating to remove excess ethylene, impregnating support decompsoing the complex to leave metal deposits | 
| 04/10/1991 | EP0421701A1 Enhanced production of propylene from higher hydrocarbons | 
| 04/10/1991 | EP0421700A1 Enhanced production of ethylene from higher hydrocarbons | 
| 04/10/1991 | CN1050535A 乙烯裂解炉 Ethylene cracking furnace | 
| 04/02/1991 | US5004855 Rhenium, Zeolite, Alumina Catalyst | 
| 03/27/1991 | CN1012169B Modification of hydrocarbon conversion processes over crystalline aluminosilicate zeolite-based catalysts by incorporation of a molybdenum compound | 
| 03/26/1991 | US5003119 Manufacture of alkylbenzenes | 
| 03/19/1991 | US5001296 Catalytic hydrodealkylation of aromatics | 
| 03/19/1991 | CA1281700C Zeolite ssz-23 | 
| 03/13/1991 | EP0416062A1 Process for the conversion of c 2?-c 12? paraffinic hydrocarbons to petrochemical feedstocks | 
| 03/05/1991 | WO1991003444A1 Method and device for obtaining lower olefines | 
| 03/05/1991 | CA2040406A1 Method for producing lower olefines and apparatus for effecting same | 
| 02/27/1991 | EP0414439A2 Conversion of plastics | 
| 02/20/1991 | CN1011689B Crystalline gallophosphate compositions | 
| 02/19/1991 | US4994249 Containing strontium; hydrocracking, reforming, saparation | 
| 02/12/1991 | US4992250 Germanium-aluminum-phosphorus-silicon-oxide molecular sieve compositions | 
| 01/30/1991 | EP0410600A2 Propylene oxide production |