Class F25B : REFRIGERATION MACHINES, PLANTS, OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
Subclass 1/10: Compression machines, plant or systems with non-reversible cycle (F25B 3/00, F25B 5/00, F25B 6/00, F25B 7/00, F25B 9/00 take precedence) with multi-stage compression (with cascade operation F25B 7/00)
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 12264853 | Oil separator and return for ejector-based direct expansion (DX) evaporator | Oct 30, 23 | Apr 01, 25 | Evapco Inc. |
| 12259165 | Method for controlling suction pressure of a vapour compression system | Aug 13, 20 | Mar 25, 25 | Danfoss A/.S |
| 12247767 | Economizer and air conditioning system | Apr 20, 22 | Mar 11, 25 | Carrier Corporation |
| 12241665 | Compressor and compressor system | Aug 27, 21 | Mar 04, 25 | Mayekawa Mfg. Co., Ltd. |
| 12228313 | Refrigeration system with parallel compressors | Mar 04, 22 | Feb 18, 25 | Effecterra, Inc. |
| 12209783 | Low ambient temperature heat pump water heater systems, heat exchangers, and methods thereto | Oct 26, 21 | Jan 28, 25 | Rheem Manufacturing Company |
| 12203687 | Cooling system with flooded low side heat exchangers | Dec 01, 23 | Jan 21, 25 | Heatcraft Refrigeration Products LLC |
| 12163526 | Compressor device and method for controlling such a compressor device | Nov 19, 21 | Dec 10, 24 | Atlas Copco Airpower naamloze vennootschap |
| 12163712 | Air conditioner | Mar 29, 22 | Dec 10, 24 | DAIKIN INDUSTRIES, LTD. |
| 12158165 | Centrifugal compressor with liquid injection | Mar 10, 21 | Dec 03, 24 | Daikin Industries Ltd. |
| 12146494 | Multi-stage compressor having interstage lubricant injection via an injection rod | Sep 05, 23 | Nov 19, 24 | Ingersoll-Rand Industrial U.S., Inc. |
| 12146688 | Refrigerant vapor compression system with multiple flash tanks | Jan 12, 21 | Nov 19, 24 | Carrier Corporation |
| 12140345 | Multi-capacity compressor with variable speed drive and method of use | Feb 11, 19 | Nov 12, 24 | Regal Beloit America, Inc. |
| 12135149 | Heating and refrigeration system | Oct 22, 21 | Nov 05, 24 | Illuminated Extractors, Ltd. |
| 12123629 | Heat source unit and refrigeration device having low-stage and high-stage compressors with four-way switching valve | Sep 22, 23 | Oct 22, 24 | DAIKIN INDUSTRIES, LTD. |
| 12104849 | Mixed refrigerant system and method | Aug 05, 22 | Oct 01, 24 | Chart Energy & Chemicals, Inc. |
| 12097451 | Method for controlling a vapour compression system during gas bypass valve malfunction | Nov 15, 17 | Sep 24, 24 | Danfoss A/.S |
| 12066219 | Cooling system | Apr 01, 19 | Aug 20, 24 | SAMSUNG HEAVY IND. CO., LTD. |
| 12050036 | System and method for cooling power electronics of refrigerant compressors | Mar 16, 21 | Jul 30, 24 | Danfoss A/.S |
| 12031752 | Refrigeration apparatus | Dec 21, 21 | Jul 09, 24 | DAIKIN INDUSTRIES, LTD. |
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2025/0109,898 | LOW AMBIENT TEMPERATURE HEAT PUMP WATER HEATER SYSTEMS, HEAT EXCHANGERS, AND METHODS THERETO | Dec 12, 24 | Apr 03, 25 | Not available |
| 2025/0102,204 | FREEZING APPARATUS | Nov 28, 22 | Mar 27, 25 | Not available |
| 2025/0052,451 | Integrated Air-Conditioning Circuit and CO2 Refrigeration System Incorporating Same | Dec 15, 22 | Feb 13, 25 | Not available |
| 2025/0052,463 | COOLING CIRCUIT FOR A SYSTEM FOR SUPPLYING AND COOLING A GAS | Nov 25, 22 | Feb 13, 25 | GAZTRANSPORT ET TECHNIGAZ |
| 2025/0052,465 | SYSTEM AND METHOD FOR CONTROLLING A PLURALITY OF EJECTORS IN AN EJECTOR REFRIGERATION CIRCUIT | Jul 08, 24 | Feb 13, 25 | Not available |
| 2025/0052,258 | CENTRIFUGAL COMPRESSOR WITH LIQUID INJECTION | Oct 28, 24 | Feb 13, 25 | Not available |
| 2024/0426,523 | REFRIGERATION CYCLE DEVICE | Sep 04, 24 | Dec 26, 24 | Not available |
| 2024/0418,169 | TWO-STAGE REFRIGERANT COMPRESSOR AND OPERATION METHOD THEREOF | May 13, 24 | Dec 19, 24 | Not available |
| 2024/0401,857 | COOLING SYSTEM | Oct 14, 22 | Dec 05, 24 | Not available |
| 2024/0310,034 | HEAT PUMP INTEGRATED WITH A NUCLEAR POWER PLANT | Jul 17, 23 | Sep 19, 24 | Hitachi America Ltd. |
| 2024/0310,083 | LIQUID HYDROGEN VAPORIZATION SYSTEM AND LIQUID HYDROGEN VAPORIZATION METHOD | Feb 08, 24 | Sep 19, 24 | Not available |
| 2024/0230,167 | REFRIGERATION CYCLE APPARATUS | Mar 31, 21 | Jul 11, 24 | Mitsubishi Electric Corporation |
| 2024/0167,733 | A COLD STORAGE, A METHOD OF OPERATING A COLD STORAGE, AND A COOLING SYSTEM | Mar 09, 22 | May 23, 24 | Not available |
| 2024/0151,436 | HYDROGEN COMPRESSION SYSTEM | Jun 23, 23 | May 09, 24 | Hyundai Motor Company; KIA CORPORATION; GRZ TECHNOLOGIES SA; |
| 2024/0133,592 | REFRIGERATION CYCLE APPARATUS | Mar 30, 21 | Apr 25, 24 | Mitsubishi Electric Corporation |
| 2024/0060,691 | MULTIPLE-COMPRESSOR SYSTEM WITH OIL BALANCE CONTROL | May 24, 23 | Feb 22, 24 | Emerson Climate Technologies, Inc. |
| 2024/0035,719 | REFRIGERATION MACHINE | Nov 16, 21 | Feb 01, 24 | MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD. |
| 2024/0011,672 | Refrigeration System with Oil Control System | Sep 20, 23 | Jan 11, 24 | Not available |
| 2023/0400,227 | MULTICASCADE HEATING SYSTEM | Nov 01, 21 | Dec 14, 23 | Not available |
| 2023/0375,237 | ECONOMIZER PORT VALVE | Sep 29, 21 | Nov 23, 23 | Not available |
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