Class F25J : LIQUEFACTION, SOLIDIFICATION, OR SEPARATION OF GASES OR GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT
Subclass 3/04: Processes or apparatus for separating the constituents of gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream (F25J 3/08 takes precedence) for air
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 12246281 | Bearing device in radial flow adsorber with gas flow guide function | Aug 01, 22 | Mar 11, 25 | HANGZHOU OXYGEN PLANT GROUP CO., LTD. |
| 12247782 | Pre-purification arrangement for air separation and method of hybrid air purification | Sep 23, 21 | Mar 11, 25 | AIR PRODUCTS AND CHEMICALS, INC. |
| 12247783 | Integrated nitrogen liquefier for a nitrogen and argon producing cryogenic air separation unit | Mar 08, 23 | Mar 11, 25 | Linde GMBH |
| 12241692 | Method for operating a heat exchanger, arrangement with a heat exchanger, and system with a corresponding arrangement | Aug 18, 20 | Mar 04, 25 | Linde GMBH |
| 12228898 | Method for monitoring a process engineering installation, and process engineering installation | Oct 05, 20 | Feb 18, 25 | Linde GMBH |
| 12215924 | Systems for extracting oxygen from a fluid | Apr 16, 21 | Feb 04, 25 | Zeine, Inc. |
| 12209802 | System and method for cryogenic air separation using four distillation columns including an intermediate pressure column | Jul 28, 22 | Jan 28, 25 | Praxair Technology, Inc. |
| 12196485 | Method and apparatus for obtaining pressurized nitrogen by cryogenic separation of air | Feb 01, 19 | Jan 14, 25 | Linde Aktiengesellschaft |
| 12196486 | Air separation apparatus, adsorber, and method | Jul 21, 21 | Jan 14, 25 | Air Products and Chemicals, Inc. |
| 12196487 | Plant and process for aerial gas separation using a parallelepipedal adsorber | Feb 12, 20 | Jan 14, 25 | L'Air Liquide - Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude |
| 12196488 | Method for obtaining one or more air products, and air separation unit | Oct 09, 19 | Jan 14, 25 | Linde GMBH |
| 12181217 | Apparatus and method for separation of air by cryogenic distillation | Aug 03, 18 | Dec 31, 24 | L'Air Liquide - Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude |
| 12158303 | Method for obtaining one or more air products and air separation system | Oct 08, 19 | Dec 03, 24 | Linde GMBH |
| 12152834 | System and method for supplying backup production in air separation device | Dec 26, 17 | Nov 26, 24 | L'Air Liquide - Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude |
| 12130081 | Multistage liquid storage-type condenser-evaporator and nitrogen production device using the same | Jan 28, 20 | Oct 29, 24 | Taiyo Nippon Sanso Corporation |
| 12123345 | System and method for high efficiency power generation using a carbon dioxide circulating working fluid | Apr 28, 23 | Oct 22, 24 | 8 RIVERS CAPITAL, LLC |
| 12123647 | Air separation device and air separation method | Jul 10, 19 | Oct 22, 24 | Taiyo Nippon Sanso Corporation |
| 12117240 | Integrated multicomponent refrigerant and air separation process for producing liquid oxygen | Jul 19, 22 | Oct 15, 24 | L'Air Liquide - Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude |
| 12104850 | Fluid recovery process and apparatus for xenon and or krypton recovery | May 06, 21 | Oct 01, 24 | Air Products and Chemicals, Inc. |
| 12098883 | System and method for separating air gases at low pressure | Feb 12, 20 | Sep 24, 24 | L'Air Liquide - Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude |
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2025/0102,406 | SYSTEM FOR DETERMINING THE PROPORTION OF AT LEAST ONE IMPURITY IN A CRYOGENIC LIQUID | Sep 20, 24 | Mar 27, 25 | Not available |
| 2025/0093,095 | WASTE ARGON SEPARATION SYSTEM AND METHOD CAPABLE OF REDUCING EMISSION OF CRYOGENIC WASTE ARGON | Jul 04, 24 | Mar 20, 25 | Not available |
| 2025/0085,050 | ARGON COLUMN FOR AIR SEPARATION UNIT AND AIR SEPARATION UNIT | Sep 02, 22 | Mar 13, 25 | Not available |
| 2025/0067,507 | METHOD AND DEVICE FOR SEPARATING AIR BY CRYOGENIC DISTILLATION | Jan 25, 22 | Feb 27, 25 | Not available |
| 2025/0060,158 | NITROGEN GENERATING DEVICE AND NITROGEN GENERATING METHOD | Aug 14, 24 | Feb 20, 25 | L'Air Liquide, Societe Anonyme pour l'Etude et l’Exploitation des Procedes Georges Claude |
| 2025/0052,493 | METHOD FOR THE CRYOGENIC SEPARATION OF AIR, AND AIR SEPARATION PLANT | Nov 17, 22 | Feb 13, 25 | Not available |
| 2025/0026,639 | EFFECTIVE USE OF CRYOGENIC SEPARATION SECTION IN SYNGAS MANUFACTURE | Jan 23, 23 | Jan 23, 25 | HALDOR TOPSOE A/S |
| 2025/0012,214 | SYSTEM AND METHOD FOR HIGH EFFICIENCY POWER GENERATION USING A CARBON DIOXIDE CIRCULATING WORKING FLUID | Sep 24, 24 | Jan 09, 25 | Not available |
| 2025/0003,678 | Microchannel Distillation Device Fabricated Using Additive Manufacture | Jul 01, 23 | Jan 02, 25 | Not available |
| 2025/0003,679 | AIR SEPARATION SYSTEM AND AIR SEPARATION METHOD | Jun 27, 24 | Jan 02, 25 | L'Air Liquide, Societe Anonyme pour l'Etude et l’Exploitation des Procedes Georges Claude |
| 2024/0426,547 | ADSORBER, PURIFICATION SYSTEM, AND PURIFICATION METHOD | Jun 26, 23 | Dec 26, 24 | Air Products and Chemicals, Inc. |
| 2024/0393,042 | METHOD FOR THE CRYOGENIC SEPARATION OF AIR, AND AIR SEPARATION PLANT | Sep 01, 22 | Nov 28, 24 | Not available |
| 2024/0393,043 | METHOD FOR THE LOW-TEMPERATURE SEPARATION OF AIR AND AIR SEPARATION PLANT | Aug 24, 22 | Nov 28, 24 | Not available |
| 2024/0384,928 | METHOD AND PLANT FOR PROVIDING A PRESSURIZED OXYGEN-RICH, GASEOUS AIR PRODUCT | May 17, 22 | Nov 21, 24 | Not available |
| 2024/0385,161 | Method, Device, and Storage Medium for Measuring Nitrogen Content | Jul 04, 24 | Nov 21, 24 | Not available |
| 2024/0377,130 | LIQUEFIED GAS SUPPLY SYSTEM AND AIR SEPARATION UNIT COMPRISING SAME | May 10, 24 | Nov 14, 24 | L'Air Liquide, Societe Anonyme pour l'Etude et l’Exploitation des Procedes Georges Claude |
| 2024/0377,132 | DISTRIBUTOR MODULE FOR A PROCESS PLANT | Aug 29, 22 | Nov 14, 24 | Not available |
| 2024/0377,129 | PLANT AND METHOD FOR LOW-TEMPERATURE AIR SEPARATION | Aug 26, 22 | Nov 14, 24 | Not available |
| 2024/0377,131 | PLANT AND PROCESS FOR LOW-TEMPERATURE FRACTIONATION OF AIR | Aug 26, 22 | Nov 14, 24 | Not available |
| 2024/0353,173 | ULTRA-HIGH-PURITY OXYGEN PRODUCTION METHOD AND ULTRA-HIGH-PURITY OXYGEN PRODUCTION APPARATUS | Apr 24, 24 | Oct 24, 24 | L'Air Liquide, Societe Anonyme pour l'Etude et l’Exploitation des Procedes Georges Claude |
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