| Patents for C01B 17 - Sulfur; Compounds thereof (11,743) |
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| 02/25/1992 | US5091593 Process for removing sulfur from organic sulfides |
| 02/20/1992 | WO1992002453A1 Intimate mixture of calcium and phosphate sources as precursor to hydroxyapatite |
| 02/20/1992 | DE4025895A1 Regenerating spent ammonium thiosulphate fixing baths - by decomposing with sodium hydroxide and sulphuric acid and recombining to form ammonium sulphite soln. |
| 02/19/1992 | EP0471368A1 Combustion method for improved endothermic dissociation of contaminated acids |
| 02/19/1992 | CN1058761A No-pollution furnace under tunnel sulfur-making method |
| 02/19/1992 | CN1015536B Process for recovering sulfur from sulfur-containing gases |
| 02/18/1992 | US5089246 Process for converting carbon disulfide to hydrogen sulfide in hydrogen sulfide/carbon disulfide mixtures |
| 02/18/1992 | US5089222 Sintering mixture of metal sulfides, metallic molybdenum and molybdenum sulfide in inert gas containing reducing gas; superconductors |
| 02/18/1992 | CA1295986C Stabilized chelating agents for removing hydrogen sulfide |
| 02/18/1992 | CA1295806C Treatment of sodium dithionite reaction mixture |
| 02/16/1992 | CA2049165A1 Method for stabilizing sodium dithionite |
| 02/13/1992 | DE4025471A1 Verfahren zur schwefelrueckgewinnung aus einem h(pfeil abwaerts)2(pfeil abwaerts)s-haltigen gasstrom unter hohem druck Method for schwefelrueckgewinnung from a h (down arrow) 2 (down arrow) s containing gas stream under high pressure |
| 02/12/1992 | EP0470670A1 Removing H2S from a sour gaseous stream |
| 02/11/1992 | WO1992002449A1 Process for recovering sulphur from a h2s-containing gas stream under high pressure |
| 02/11/1992 | US5087292 Recirculating molten metal in bath, ejecting near gas outlet |
| 02/11/1992 | CA2089263A1 Process for sulfur recovery from a gaseous stream containing hydrogen sulfide under high pressure |
| 02/11/1992 | CA1295440C Process for bleaching |
| 02/09/1992 | CA2048479A1 Removing h2s from a sour gaseous stream |
| 02/04/1992 | US5085675 Process of regenerating a high-boiling scrubbing solution which contains CO2 and H2 S |
| 01/28/1992 | US5084180 Method for treating zinc-containing sulfate solution |
| 01/28/1992 | CA1294756C Process and device for the selective extraction of h s from gas mixtures |
| 01/26/1992 | WO1992001635A1 Catalytic destruction of sulfur-oxygen anions |
| 01/23/1992 | WO1992000917A1 Composition and process for treating water containing metal ions and organic and/or inorganic impurities |
| 01/21/1992 | US5082645 Waste acid recovery process |
| 01/14/1992 | US5080881 Melts, agitation, suspension |
| 01/14/1992 | US5080718 Inorganic pigments of the empirical formula Ax By Cz |
| 01/14/1992 | US5080695 Method of removing hydrogen sulfide from liquid sulfur |
| 01/14/1992 | CA1294113C Sulfur recovery process using metal oxide absorber feed for regeneration |
| 01/08/1992 | EP0464532A1 Process for recovering sulfur |
| 01/08/1992 | EP0464091A1 Improved sulfur dioxide generator |
| 01/08/1992 | CN1057634A Method and apparatus for manufacture of clinker of mineral raw materials |
| 01/07/1992 | US5078894 Formulations for iron oxides dissolution |
| 01/01/1992 | CN1057441A Method for processing mother liquor used for synthesizing of sodium dithionate by sodium formate method |
| 01/01/1992 | CN1015252B Desulfurization of gypsum |
| 12/31/1991 | US5077031 Catalytic process for producing sulphur from H2 S containing sour gas |
| 12/31/1991 | US5076927 Fermentation by sulfur reducing bacteria; sulfiding, methanati on |
| 12/30/1991 | CA2045936A1 Process for recovering sulfur |
| 12/25/1991 | CN1057212A Catalyst for oxidation of sulfur dioxide |
| 12/25/1991 | CN1057211A Process using sorbents for removal of sox from flue gas and other gas streams |
| 12/24/1991 | US5075098 Reacting solid sodium polysulfide with liquid sodium |
| 12/24/1991 | US5075097 Method and apparatus for sulfuric acid concentration |
| 12/24/1991 | US5075086 Stabilized concentrated sulphuric acid compositions |
| 12/24/1991 | CA1293359C Process for removing oxides of nitrogen and sulfur from waste gases |
| 12/12/1991 | WO1991018832A1 Monolithic catalysts for conversion of sulfur dioxide to sulfur trioxide |
| 12/12/1991 | WO1991018668A1 Apparatus for carrying out a catalytic process in a fluidized bed |
| 12/11/1991 | EP0460745A1 Process for regenerating, by means of hydrogen peroxide, spent sulphuric acid from nitration reactions |
| 12/11/1991 | EP0460388A1 Catalyst for the oxidation of sulphur dioxide |
| 12/11/1991 | EP0460230A1 Method and apparatus for treating exhaust gas by multi-stage irradiation with electron beam |
| 12/10/1991 | US5071633 Method of improving handling characteristics of froth of elemental sulfur particles |
| 12/10/1991 | US5071632 Process for preparing crystals of anhydrous sodium sulfide |
| 12/10/1991 | US5071332 Sulphur granulator |
| 12/10/1991 | CA1292922C Transparent toilet soap of light colour |
| 12/09/1991 | WO1991018667A1 PROCESS USING SORBENTS FOR THE REMOVAL OF SOx FROM FLUE GAS AND OTHER GAS STREAMS |
| 12/09/1991 | CA2064715A1 Process using sorbents for the removal of sox from flue gas and other gas streams |
| 12/04/1991 | EP0459348A1 Treatment of residues obtained during barium or strontium sulphide extraction |
| 12/04/1991 | EP0324753B1 Process for manufacturing a calcium sulphate-containing solid secondary raw material |
| 12/04/1991 | EP0287608B1 Dual combustion oxygen-enriched claus sulfur plant |
| 12/04/1991 | EP0266417B1 Reduction of no x? in flue gas |
| 12/04/1991 | CN2089833U Energy-saving refining sulphic acid furnace apparatus |
| 12/04/1991 | CN1056662A Alkali sulfide produced by activated method |
| 12/04/1991 | CN1014975B Layered oxides containing interlayer polymeric oxides and their syntesis |
| 11/21/1991 | EP0457120A1 Process for preparing titanium dioxide |
| 11/19/1991 | US5066474 Method for sulfur dioxide production from calcium sulfate by entrained high-temperature slagging reduction |
| 11/19/1991 | US5066470 Contacting with aqueous solution containing chloride salt and precipitate; oxidation of ferrousto ferric chloride |
| 11/14/1991 | WO1991017124A1 New formulations for iron oxides dissolution |
| 11/13/1991 | CN1056064A Process of purifying h2s-and co2-containing gas |
| 11/12/1991 | US5064538 Dialysis and electrodialysis |
| 11/07/1991 | DE4014018A1 Gas purificn. using recyclable scrubber soln. - esp. for desulphurisation of fuel gas |
| 11/06/1991 | EP0455285A1 Process for cleaning a gas containing H2S and CO2 |
| 11/06/1991 | EP0454817A1 Process for the production of cement clinker and sulphur dioxide recovery. |
| 11/05/1991 | US5062960 Heat exchange |
| 11/02/1991 | CA2041157A1 Process of purifying an h2s- and co2-containing gas |
| 10/29/1991 | US5061472 Process for the concentration of sulphuric acid containing metal sulphates |
| 10/29/1991 | US5061348 Waste piranha from semiconductor processing |
| 10/28/1991 | WO1991017274A1 Metal extraction by ion exchange |
| 10/28/1991 | CA2079596A1 Metal extraction by ion exchange |
| 10/22/1991 | CA1290925C Apparatus for removing sulfur from organic polysulfides |
| 10/22/1991 | CA1290921C Oxygen enriched claus system with sulfuric acid injection |
| 10/22/1991 | CA1290919C Decomposition of ammonium thiocyanate |
| 10/16/1991 | EP0451922A1 Process for the removal of sulfur dioxide from waste gas |
| 10/15/1991 | US5057298 Process for recovery of sulfur values from a gas stream |
| 10/15/1991 | US5057292 Hydrogen sulfide abating cooling toner |
| 10/15/1991 | CA1290551C Sulfur recovery process using metal oxide absorbent |
| 10/15/1991 | CA1290550C Method for removing and recovering sulphur in elemental form fromgases containing sulphur dioxide or sulphur dioxide and hydrogen sulphide |
| 10/13/1991 | WO1991016269A1 Process for the treatment of water containing sulphur compounds |
| 10/09/1991 | EP0450680A2 Catalysts and impregnation solutions preparation process |
| 10/09/1991 | CN1014233B Oligomerization of olefins |
| 10/09/1991 | CN1014205B Apparatus for removing sulfur from organic polysulfides ir2850 |
| 10/08/1991 | US5055610 Process for the separation of sulphuric acid from aqueous mixtures thereof with paraffin-sulphonic acids |
| 10/08/1991 | US5055384 Granulated photographic fixative and its preparation |
| 10/08/1991 | CA1290140C Recycling of waste heat boiler effluent to an oxygen- enriched claus reaction furnace |
| 10/08/1991 | CA1290139C Sulfur recovery process including removal of residual sulfur from claus catalyst after regeneration |
| 10/08/1991 | CA1290138C Process for the treatment of sulfur containing gases |
| 10/02/1991 | EP0319563B1 Process for bleaching of materials with a dithionite solution |
| 09/25/1991 | EP0434686A4 Removal of nitric oxide from waste gases and recovery as nitric acid |
| 09/24/1991 | WO1991014651A1 Methods for recovering high grade process energy from a contact sulfuric acid process |
| 09/24/1991 | US5051204 Multi-element metal chalocogenide |
| 09/24/1991 | US5051187 Process for recovering sulfuric acid |
| 09/24/1991 | CA1289335C Process and an apparatus for causing the gaseous sulfur compounds offlue gases to react to form solid compounds which can be separated from the flue gases |
| 09/19/1991 | WO1991013828A1 Process for conditioning waste sulphuric acid |