| Patents for C01B 7 - Halogens; Halogen acids (5,959) |
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| 08/06/1991 | US5037911 Addition polymerization using a catalyst which is activated by heating |
| 07/24/1991 | EP0437881A1 Method for pretreatment of active carbon |
| 07/24/1991 | CN1013248B Method of treating by silicopyrohydrolysis worn linings from hall-heroult electrolysis tanks |
| 07/23/1991 | US5034209 Dehydrogenation of hydrogen chloride with oxygen in the presence of chromium oxide |
| 07/17/1991 | CN1013200B Alumina treated by silicon and/or fluorine |
| 07/16/1991 | US5032371 Dehydration |
| 07/03/1991 | EP0417194A4 Method and apparatus for purifying hydrogen fluoride |
| 06/27/1991 | WO1991008980A1 Improved process for oxidation of hydrogen halides to elemental halogens |
| 06/19/1991 | EP0432909A2 Chromium oxide catalyst regeneration method |
| 06/17/1991 | WO1991008824A1 Method of concentrating chlorine gas |
| 06/17/1991 | CA2046325A1 Concentration process of gaseous chlorine |
| 06/12/1991 | EP0431305A1 Process for the preparation of molluscicidal 2,4,5-tribromopyrrole-3-carbonitrile compounds |
| 06/12/1991 | CN1052092A Process for comprehensive utilization of acid dregs |
| 06/05/1991 | EP0430401A1 Process for purifying hydrogen fluoride |
| 06/05/1991 | EP0429638A1 Method of hydrolyzing metal halides |
| 06/04/1991 | US5021231 Recycling; utilizes spent sulfuric acid; sulfur dioxide contamination limited |
| 06/04/1991 | US5021199 Sieve plate for effecting gas-liquid contact and structure containing sieve plate |
| 05/31/1991 | CA2023589A1 Process for purifying hydrogen fluoride |
| 05/29/1991 | EP0428547A1 Manufacture of high purity low arsenic anhydrous hydrogen fluoride |
| 05/15/1991 | CN1051333A Process for purifying hydrogen fluoride |
| 05/08/1991 | EP0426344A1 Process for purifying hydrogen fluoride |
| 05/08/1991 | EP0426286A1 Process for purifying hydrogen fluoride |
| 05/08/1991 | EP0425922A1 Process for the purification and concentration of diluted impure hydrochloric acid |
| 05/08/1991 | EP0425570A1 Oxidation hydrolysis of iodoalkanes |
| 05/08/1991 | CN1012567B Process for recovery of ammonia and potassium fluoride from ammonium fluoride solution |
| 05/07/1991 | CA1283771C Manufacturing process of chlorine |
| 05/03/1991 | WO1991006505A1 Efficient production of chlorine from hydrogen chloride |
| 05/02/1991 | EP0425344A2 Light polarizing materials and suspensions thereof |
| 05/02/1991 | EP0424669A2 Process for obtaining pure hydrogen chloride from flue gases containing this compound |
| 05/01/1991 | CA2028430A1 Process for purifying hydrogen fluoride |
| 05/01/1991 | CA2024624A1 Process for purifying hydrogen fluoride |
| 04/17/1991 | EP0422381A2 Method for removing material from surfaces using a plasma |
| 04/16/1991 | US5008403 Reacting 2-trihaloacetylpyrrole-4-carbonitrile with base and brominating agent in solvent; one step |
| 04/04/1991 | WO1991004223A1 Gas separation by semi-permeable membranes |
| 03/29/1991 | WO1991004940A1 Method and device for producing pure elemental iodine |
| 03/27/1991 | CN1012170B Recovery of ethylene, chlorine and hcl from vented waste gas from direct chlorination seactor |
| 03/26/1991 | US5002701 Iodine and Halide Complex of a Pyrazinedicarboxylic Acid |
| 03/20/1991 | EP0417804A1 Method of anodic deposition of manganese |
| 03/20/1991 | EP0417194A1 Method and apparatus for purifying hydrogen fluoride. |
| 03/19/1991 | US5000006 Cooling and compression a gaseous mixture to separate chlorine, stripping to desorb carbon dioxide |
| 03/19/1991 | CA1281745C Recovery of ethylene, chlorine and hc1 from vented waste gas from direct chlorination reactor |
| 03/05/1991 | US4997632 Semiconductor chemisorption, hydrolysis |
| 02/20/1991 | CN1049294A Method and apparatus for simultaneously scrubbing cement kiln exhaust gas and producing useful by-products therefrom |
| 02/19/1991 | US4994256 Recovery of chlorine from hydrogen chloride by carrier catalyst process |
| 02/19/1991 | US4994255 Oxidation of ferrous chloride directly to chlorine in a fluid bed reactor |
| 02/13/1991 | CN1011582B Preparation of hydrochloric acid and sodium carbonate by using ammonium chloride |
| 02/05/1991 | US4990321 Adding water to prevent formation of methyl bromide; distillation |
| 02/05/1991 | US4990320 Removal of trivalent arsenic by precipitation of arsenic iodide using iodine compounds |
| 01/23/1991 | EP0409716A2 Process for the hydrogenation of halogenated nitroaromatic derivatives in the presence of iodides |
| 01/23/1991 | EP0077331B2 Process and device for manufacturing synthetic anhydrous calcium sulphate and pure hydrofluoric acid |
| 01/22/1991 | US4986975 Process for purifying hydrogen chloride from pyrolysis of 1,2-dichloroethane |
| 01/22/1991 | US4986974 Process for the separation of halogenated hydrocarbons from hydrochloric acid |
| 01/15/1991 | CA1278997C Band guiding arch for strapping machine |
| 01/01/1991 | US4982039 Noncatalytic reduction, pyrolysis |
| 12/18/1990 | US4978527 Aqueous mixture with iodine-containing copolymers forms hydrophobic wear resistant film on skin; drug delivery |
| 12/18/1990 | US4978518 Chlorinationl, steam distilling of bromide-rich brines |
| 12/14/1990 | WO1990015775A1 Method of hydrolyzing metal halides |
| 12/14/1990 | CA2034004A1 Method of hydrolyzing metal halides |
| 12/13/1990 | WO1990015017A1 Recovery of chlorine from hydrogen chloride by carrier catalyst process |
| 12/11/1990 | US4976947 Process for the recovery of elemental iodine from alkyl iodides |
| 12/04/1990 | US4975156 Process for the separation of hydrogen fluoride, 1,1-dichloro-1-fluoroethane and 1-chloro-1,1-difluoroethane from liquid mixtures thereof |
| 12/04/1990 | US4975146 Cleaning surface, then exposing to a halogen species in a plasma reactor |
| 11/22/1990 | EP0398489A2 Film-forming emulsion containing iodine and methods of use |
| 11/07/1990 | EP0395898A1 Process for the separation of hydrogen fluoride, 1-1-dichloro-1-fluoroethane and 1-chloro-1,1-difluoroethane from liquid mixtures thereof |
| 11/04/1990 | CA2013822A1 Process for the separation of hydrogen fluoride, 1,1-dichloro-1-fluoroethane and 1-chloro-1,1-difluoroethand from liquid mixtures thereof |
| 10/24/1990 | EP0393402A1 Process for the purification of heavy metal-containing waste gas with high chloride content |
| 10/23/1990 | US4965061 Process for removing fluoride from a wastewater and producing hydrofluoric acid therefrom |
| 10/20/1990 | WO1990012758A1 A process and device for desalinating sea water and for obtaining power and the raw materials contained in sea water |
| 10/20/1990 | CA2053263A1 Process and device for the desalination of sea water and for obtaining energy and the raw materials contained in sea water |
| 10/20/1990 | CA2012435A1 Halogen generation |
| 10/18/1990 | DE3912563A1 High chloride content off-gas purificn. - involving conc. hydrochloric acid prodn. by scrubbing and rectification |
| 10/17/1990 | CA2014306A1 Process for the purification of waste gas having a high chloride content |
| 10/10/1990 | CA2011826A1 Film-forming emulsion containing iodine and methods of use |
| 10/02/1990 | US4961200 Process and generator for generating atomic iodine in the fundamental state, and iodine chemical laser employing such |
| 10/02/1990 | US4960580 Precipitating trivalent arsenic with sulfide ions |
| 09/25/1990 | US4959202 Recovery of chlorine from hydrogen chloride by carrier catalyst process |
| 09/13/1990 | DE4004454A1 Verfahren zur rueckgewinnung von chlor aus chlorwasserstoff mittels eines transportkatalysators, sowie anlage zur durchfuehrung des verfahrens Method for the recovery of chlorine from hydrogen chloride by means of a catalyst transport, as well as plant for carrying out the method |
| 09/11/1990 | US4956169 Production process of chlorine |
| 09/07/1990 | WO1990009957A1 Process for the continuous recovery of hydrogen fluoride gas |
| 09/04/1990 | US4954330 Process for purifying hydrogen fluoride |
| 08/29/1990 | EP0383826A1 Process for the preparation of copoly(arylene sulfide). |
| 08/28/1990 | US4952386 Filtration, extraction, ion-exchanging, regeneration |
| 08/09/1990 | WO1990008730A1 Process for removing fluoride from a wastewater and producing hydrofluoric acid therefrom |
| 08/01/1990 | EP0380365A1 Method for recovering hydrobromic acid and methanol |
| 08/01/1990 | EP0380014A1 Method for removing impurities from anhydrous hydrogen chloride |
| 08/01/1990 | EP0379512A1 Oxyiodination incorporating an iodine generator for the conversion of methyl iodide to iodine. |
| 07/31/1990 | US4944846 Process for the separation of HF via Azeotropic distillation |
| 07/28/1990 | WO1990008558A1 Stabilized sterilizing or disinfecting halogen containing composition, method and apparatus |
| 07/28/1990 | CA2045687A1 Stabilized sterilizing or disinfecting halogen containing composition, method and apparatus |
| 07/27/1990 | CA2008668A1 Purification of anhydrous hydrogen chloride |
| 07/17/1990 | US4941893 Gas separation by semi-permeable membranes |
| 07/12/1990 | WO1990007339A1 Treatment of iodine deficiency diseases |
| 07/11/1990 | EP0377266A1 Diatomic iodine for the treatment of iodine deficiency diseases |
| 07/11/1990 | CN1008693B Catalyst recovery process |
| 07/03/1990 | US4938935 Alteration of the character of hydrogen fluoride droplets rendering them more susceptible to a water drench |
| 06/27/1990 | EP0374806A2 Process for generating extreme energy flow |
| 06/26/1990 | US4936955 Hydrofluoric acid reprocessing for semiconductor standards |
| 06/20/1990 | EP0373163A1 Manufacture of high purity low arsenic anhydrous hydrogen fluoride |
| 06/20/1990 | CN1043111A Preparation method of high pure chlorine |
| 06/20/1990 | CN1043095A Sieve plate for effecting gas-liquid contact and structure containing sieve plate |