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Class Information
Number: 502/217
Name: Catalyst, solid sorbent, or support therefor: product or process of making > Catalyst or precursor therefor > Sulfur or compound containing same > Sulfate
Description: Composition in which the sulfur is combined with four oxygen atoms to form a divalent ion.

Sub-classes under this class:

Class Number Class Name Patents
502/218 And group i metal containing (i.e., alkali, ag, au or cu) 111

Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
6762311 Ethylene oxide catalyst Jul. 13, 2004
6737380 Solid acid catalyst, production method thereof, and method for hydrodesulfurizing and isomerizing light hydrocarbon oil using the same May. 18, 2004
6706659 High-activity isomerization catalyst and process Mar. 16, 2004
6673739 Catalyst for CO shift reaction Jan. 6, 2004
6673326 Catalytic processes for the reduction of perfluorinated compounds and hydrofluorocarbons Jan. 6, 2004
6562749 Process for the preparation of a catalyst or catalyst precursor May. 13, 2003
6562752 Metallic sulphide catalysts, processes for synthesising said catalysts and use thereof May. 13, 2003
6495733 Superacid catalyst for the hydroisomerization of n-paraffins Dec. 17, 2002
6492296 Two-step process for sulfiding a catalyst containing an S-containing additive Dec. 10, 2002
6448198 Acid catalyst with a sulfated zirconia base and its uses Sep. 10, 2002
6432867 Process for sulfurizing catalysts in a reducing medium Aug. 13, 2002
6417134 Ex-situ presulfuration in the presence of hydrocarbon molecule Jul. 9, 2002
6380448 Method for recovering styrene monomer from polystyrene resin by using a catalyst Apr. 30, 2002
6326328 Solid acid catalyst and process for preparing the same Dec. 4, 2001
6316382 Process for sulphurizing catalysts by reduction followed by sulphurization Nov. 13, 2001
6288006 Method for pre-sulphurization of catalysts Sep. 11, 2001
6261989 Catalytic converter for cleaning exhaust gas Jul. 17, 2001
6242378 Process for sulphurizing catalysts in the presence of carbon and elemental sulphur Jun. 5, 2001
6242167 Developer for use with carbonless copy paper and photo imaging systems Jun. 5, 2001
6214307 Exhaust gas purifying catalyst and exhaust gas purifying method Apr. 10, 2001
6180555 Acid catalyst with a sulfated zirconia base and its uses Jan. 30, 2001
6180556 Solid superacid catalysts for the isomerization of hydrocarbons and sol-gel process for their production Jan. 30, 2001
6177596 Highly acidic microporous synergistic solid catalyst and its applications Jan. 23, 2001
6150299 Cerium- and zirconium-based mixed oxide, method of producing same and catalyst material for exhaust gas purification Nov. 21, 2000
6139723 Iron-based ionic liquid catalysts for hydroprocessing carbonaceous feeds Oct. 31, 2000
6127309 Catalyst for use in the alkylation of isoalkanes Oct. 3, 2000
6110860 Catalyst for purifying exhaust gas, process for production thereof, exhaust gas purifying filter, and exhaust gas purifying apparatus Aug. 29, 2000
6107235 Solid acid catalyst and process for preparing the same Aug. 22, 2000
6054408 Catalyst for reducing the nitrogen oxide concentration in a flowing medium and method for producing the catalyst Apr. 25, 2000
6037303 Superacid catalyst for the hydroisomerization of n-paraffins and process for its preparation Mar. 14, 2000
6024933 Direct oxidation method for converting sulphur compounds into sulphur with a copper catalyst Feb. 15, 2000
5972824 Catalyst, process for producing the catalyst and process for preparing vinyl acetate using the catalyst Oct. 26, 1999
5958824 Ethylene oxide catalyst Sep. 28, 1999
5958822 Modified fluorosulfonic acids Sep. 28, 1999
5952258 Process for the preparation of pyridine using zeolite catalysts Sep. 14, 1999
5935897 Monomodal and polymodal catalyst supports and catalysts having narrow pore size distributions and their production Aug. 10, 1999
5935898 Monomodal and polymodal catalyst supports and catalysts having narrow pore size distributions and their production Aug. 10, 1999
5925801 Process for preparing high-octane gasoline components, and a catalyst Jul. 20, 1999
5905053 Ethylene oxide catalyst May. 18, 1999
5883036 Olefin oligomerization catalyst, process for preparing the same, and olefin oligomerization process using the same Mar. 16, 1999
5866501 Dispersed anion-modified iron oxide catalysts for hydroconversion processes Feb. 2, 1999
5856609 Aromatic hydrodealkylation process with sulfur oxide containing catalyst Jan. 5, 1999
5854167 Ethylene oxide catalyst Dec. 29, 1998
5821191 Process for presulfiding hydrocarbon processing catalysts Oct. 13, 1998
5786293 Process for presulfiding hydrocarbon processing catalysts Jul. 28, 1998
5786294 Crystalline mesoporous zirconia catalysts having stable tetragonal pore wall structure Jul. 28, 1998
5780383 Solid superacid catalyst comprising group VII metal and having H.sub.o less than -18 Jul. 14, 1998
5753192 Zirconia and sulfate in NOx traps to improved trapping and sulfur tolerance May. 19, 1998
5741753 Nitrate-free catalyst for the wash-and-wear finishing of textiles Apr. 21, 1998
5731256 Alkylation catalyst for C.sub.4 -C.sub.5 isoparaffins using at least one C.sub.2 -C.sub.6 olefin Mar. 24, 1998

1 2 3 4 5

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