| Patents for C01B 23 - Noble gases; Compounds thereof (1,372) |
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| 06/19/1990 | US4935044 Evaporating under hydrostatic pressure; compressing; treating with hydrogen and free of oxygen and removing water formed; rectification |
| 05/15/1990 | US4925460 Adsorption; lithium exchanged |
| 04/25/1990 | EP0365490A1 Apparatus and method for the removal of impurity gases from inert gases and the ensurance of extremely low levels of hydrogen |
| 04/25/1990 | EP0364916A1 Apparatus for the purification of noble gases |
| 04/24/1990 | US4919690 Method for purifying a continuous flow of helium and/or neon gas |
| 04/18/1990 | CN1007620B Reclaiming argon from hydrogen depletion blowing of sythesis ammonia device using separation process of hypothermia and non hypothermia |
| 04/18/1990 | CN1007619B Recovering argon from blowing air of ammonia converter by separating method of combining low temp. with non low temp. |
| 04/17/1990 | US4917716 Process for purifying a gaseous mixture |
| 03/21/1990 | EP0359149A1 Membrane unit turn-down control system |
| 03/21/1990 | EP0358714A1 Process for helium enrichment |
| 03/21/1990 | EP0358700A1 Process for extraction of helium |
| 03/07/1990 | EP0356861A2 Separation of gas mixtures by vacuum swing adsorption (VSA) in a two-adsorber-system |
| 02/27/1990 | CA1266163A1 One-step process for purifying an inert gas |
| 02/22/1990 | DE3922723A1 Krypton and xenon sepn. - for methane based mixt. obtd. from ammonia synthesis residual gas using multi-stage rectification |
| 02/22/1990 | DE3922594A1 Krypton and xenon recovery from synthesis of residual gases - by catalytic hydrogenation of higher boiling hydrocarbon(s) to methane |
| 01/24/1990 | CN1006524B Pressure swing adsorption with intermediate product recovery |
| 01/17/1990 | EP0350656A2 Inert gas purifier especially suited for bulk nitrogen without the use of hydrogen or other reducing gases |
| 12/27/1989 | CN1006203B Agent for purification of inert gases from hydrogen and oxygen |
| 11/09/1989 | DE3813976A1 Process for recovering a helium-rich helium/hydrogen mixture |
| 11/08/1989 | CN1036909A Reactive posttreatment for gas separation membranes |
| 10/18/1989 | EP0337000A2 Reactive posttreatment for gas separation membranes |
| 10/17/1989 | US4874592 Adsorption, desorption liquid oxygen mixture |
| 09/26/1989 | US4869883 Inert gas purifier for bulk nitrogen without the use of hydrogen or other reducing gases |
| 09/20/1989 | EP0333555A1 Process and device for purifying an inert gas such as argon and their use in nuclear reactors |
| 09/06/1989 | EP0331028A1 Process for the purification of crude argon |
| 09/05/1989 | US4863496 Reactive posttreatment for gas separation membranes |
| 08/29/1989 | US4861361 Cryogenic distillation to separate, pressure swing adsorption, gas diffusion zone |
| 08/22/1989 | US4859435 Controlled stoichiometry; using catalyst |
| 08/22/1989 | US4859434 Production of endothermic gases with methanol |
| 08/16/1989 | EP0327734A1 Gas separation |
| 08/15/1989 | US4857082 Gas separation with semipermeable membrane |
| 08/02/1989 | EP0325956A2 Process for cleaning a gaseous mixture |
| 07/04/1989 | US4844715 Multistep selective absorption and desorption |
| 05/30/1989 | US4834956 Adsorption, catalytic hydrogenation, regeneration |
| 05/24/1989 | EP0317235A2 Separation of gas mixtures including hydrogen |
| 05/23/1989 | US4832935 Method for dehydrating hydrogen fluoride |
| 05/10/1989 | EP0315075A1 A method for dehydrating hydrogen fluoride |
| 04/05/1989 | CN1032115A Seperation method with adsorption |
| 04/04/1989 | US4817392 Process for the production of argon |
| 03/28/1989 | US4816237 Process for purifying argon gas and apparatus used therefor |
| 03/28/1989 | US4816041 Process and installation for the adsorptive separation of krypton from a krypton nitrogen gas mixture |
| 03/28/1989 | US4816039 PSA multicomponent separation utilizing tank equalization |
| 03/23/1989 | WO1989002309A1 Adsorption-separation method |
| 02/23/1989 | DE3726730A1 Kohlenstoffmembranen und verfahren zu ihrer herstellung Carbon membranes and methods for their preparation |
| 02/15/1989 | CN1031064A Generation process and apparatus of inert gas |
| 02/08/1989 | EP0302316A1 Process for the production of argon |
| 01/24/1989 | CA1249116A1 Methods and apparatus for purifying inert gas streams |
| 12/07/1988 | EP0294142A2 Method of cleaning exhaust gases |
| 12/01/1988 | WO1988009306A1 Process for helium enrichment |
| 12/01/1988 | WO1988009305A1 Process for extraction of helium |
| 11/23/1988 | EP0291976A1 Process for the production of helium |
| 11/23/1988 | EP0291975A1 Process for helium enrichment |
| 11/01/1988 | US4781900 Process and composition for purifying arsine, phosphine, ammonia, and inert gases to remove Lewis acid and oxidant impurities therefrom |
| 10/26/1988 | EP0288030A1 Improved outerwrap for hollow fiber membrane separation device |
| 10/26/1988 | CN87101534A Technological process equipment for purifying xenon |
| 09/28/1988 | EP0283961A2 Process and composition for purifying arsine, phosphine, ammonia and inert gases to remove Lewis acid and oxidant impurities therefrom |
| 09/14/1988 | EP0282165A1 Method and plant for recovering hydrogen and argon from ammonia synthesis purge gas |
| 08/02/1988 | US4761395 Process and composition for purifying arsine, phosphine, ammonia, and inert gases to remove Lewis acid and oxidant impurities therefrom |
| 08/02/1988 | CA1239878A1 Gas separation process |
| 07/19/1988 | US4758341 Membrane separation device |
| 06/21/1988 | US4752311 Argon recovery from ammonia plant purge gas utilizing a combination of cryogenic and non-cryogenic separating means |
| 06/14/1988 | US4750925 Argon recovery from hydrogen depleted ammonia plant purge gas utilizing a combination of cryogenic and non-cryogenic separating means |
| 05/17/1988 | US4744805 Selective adsorption process using an oxidized ion-exchanged dehydrated chabizite adsorbent |
| 05/11/1988 | EP0266745A2 Process for separating components of a gas stream |
| 04/06/1988 | EP0262889A2 Argon and nitrogen coproduction process |
| 03/23/1988 | EP0260530A2 Process for carrying out catalytic reactions |
| 03/22/1988 | US4732580 Compression and separation of air |
| 02/11/1988 | DE3626562A1 Process for recovering argon from a gas mixture |
| 02/11/1988 | DE3626359A1 Evaporator and method for evaporating a fluid |
| 01/05/1988 | US4717407 Process for recovering helium from a multi-component gas stream |
| 12/30/1987 | CN87104885A Process and plant for separating gaseous mixture by adsorption |
| 12/15/1987 | US4713362 Selective zeolitic adsorbent and a method for activation thereof |
| 12/15/1987 | US4713224 One-step process for purifying an inert gas |
| 12/09/1987 | EP0248720A1 Process and apparatus for separating a gas mixture by adsorption |
| 11/25/1987 | EP0246572A2 Selective zeolitic adsorbent and a method for activation thereof |
| 11/18/1987 | CN87100951A Reclaiming argon from hydrogen depletion blowing of sythesis ammonia device using seperation process of hypothermia and non-hypothermia |
| 10/21/1987 | EP0242028A2 Method for purifying a continuous flow of helium and/or neon gas |
| 10/21/1987 | CN87100950A Recovering hydrogen from blowing air of ammonia converter by separating method of combining low temp. with non low temp. |
| 10/20/1987 | US4701187 Semipermeability membranes |
| 10/07/1987 | EP0240270A1 One-step process for purifying an inert gas |
| 09/30/1987 | EP0239235A1 Argon recovery from hydrogen depleted ammonia plant purge gas |
| 09/30/1987 | EP0239234A2 Separation of a multicomponent gas mixture |
| 09/10/1987 | DE3607118A1 Method and reactor for carrying out a catalytic reaction |
| 09/02/1987 | EP0234895A2 Recovery of argon |
| 08/25/1987 | US4689062 Argon recovery from ammonia plant purge gas utilizing a combination of cryogenic and non-cryogenic separating means |
| 08/18/1987 | US4687498 Argon recovery from hydrogen depleted ammonia plant purge gas utilizing a combination of cryogenic and non-cryogenic separating means |
| 06/23/1987 | US4675030 Compression, cooling to revmove water vapor; semipermeable me mbranes remove other gases |
| 03/31/1987 | CA1219814A1 Process for obtaining high concentration argon by pressure-swing-adsorption |
| 01/22/1987 | DE3526160A1 Use of separation nozzles or ultracentrifuges for extracting helium from helium-containing gas mixtures |
| 01/17/1987 | CN85102148A Pressure swing adsorption with intermediate product recovery |
| 12/23/1986 | US4631096 High energy materials containing metastable helium, a process for producing same and applications thereof |
| 11/18/1986 | US4623524 Combustion, purification |
| 11/12/1986 | CA1213873A Porous materials for concentration and separation of hydrogen or helium, and process therewith for the separation of the gas |
| 10/15/1986 | EP0197717A1 Methods and apparatus for purifying inert gas streams |
| 10/07/1986 | CA1212309A2 Method for compressing a low temperature high density liquid gas |
| 09/30/1986 | US4614729 Granular metal oxides |
| 09/25/1986 | WO1986005414A1 Pressure swing adsorption with intermediate product recovery |
| 09/17/1986 | EP0194334A1 Pressure swing adsorption with intermediate product recovery |
| 09/17/1986 | CN85102708A Agent for purification of inert gases from hydrogen and oxygen |
| 07/16/1986 | CN85100505A Technique separating and concentrating krypton and xenon from waste gas-hydrogen in the nucbar reactor |