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Class Information
Number: 62/81
Name: Refrigeration > Processes > Defrosting or frost inhibiting > By utilizing working fluid of refrigeration producer
Description: Processes accomplished by utilizing a fluid used in the refrigeration process.


Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
7331189 Cooling device Feb. 19, 2008
7302803 Compressor, method for manufacturing the compressor, defroster of refrigerant circuit, and refrigerant unit Dec. 4, 2007
7247254 Antifreeze composition and method Jul. 24, 2007
7178346 Constant temperature refrigeration system for extensive temperature range application and control method thereof Feb. 20, 2007
7171817 Heat exchanger liquid refrigerant defrost system Feb. 6, 2007
7111472 Circuit apparatus and configurations for refrigeration systems Sep. 26, 2006
7043938 Method of thawing a cryogenic unit May. 16, 2006
6983613 High-speed defrost refrigeration system Jan. 10, 2006
6931880 Method and arrangement for defrosting a vapor compression system Aug. 23, 2005
6883334 Cold plate temperature control method and apparatus Apr. 26, 2005
6854277 Quiet ice making apparatus Feb. 15, 2005
6807813 Refrigeration defrost system Oct. 26, 2004
6775993 High-speed defrost refrigeration system Aug. 17, 2004
6745583 Defrosting apparatus of air conditioner and method thereof Jun. 8, 2004
6701729 Device and method for operating a refrigeration cycle without evaporator icing Mar. 9, 2004
6666043 Dewfall preventing device of refrigerator Dec. 23, 2003
6588221 Refrigeration system with dedicated compressor for hot gas defrost Jul. 8, 2003
6321543 Method for protecting compressors used in chillers and/or heat pumps Nov. 27, 2001
6286322 Hot gas defrost refrigeration system Sep. 11, 2001
6283738 Package-type scroll compressor Sep. 4, 2001
6233951 Heating, cooling and de-humidification system for buildings May. 22, 2001
6170270 Refrigeration system using liquid-to-liquid heat transfer for warm liquid defrost Jan. 9, 2001
6094925 Crossover warm liquid defrost refrigeration system Aug. 1, 2000
6012294 Air conditioner control method and apparatus of the same Jan. 11, 2000
6000231 Reverse liquid defrost apparatus and method Dec. 14, 1999
5941085 Refrigerator having an apparatus for defrosting Aug. 24, 1999
5921092 Fluid defrost system and method for secondary refrigeration systems Jul. 13, 1999
5904047 Air conditioner control apparatus and method therefor May. 18, 1999
5890368 Dehumidifier Apr. 6, 1999
5867993 Refrigerant reservoir and heat exchanger unit for a refrigerated counter system Feb. 9, 1999
5865033 Method and device for cooling gases Feb. 2, 1999
5845502 Heat pump having improved defrost system Dec. 8, 1998
5809789 Refrigeration module Sep. 22, 1998
5771699 Three coil electric heat pump Jun. 30, 1998
5758507 Heat pump defrost control Jun. 2, 1998
5755104 Heating and cooling systems incorporating thermal storage, and defrost cycles for same May. 26, 1998
5729985 Air conditioning apparatus and method for air conditioning Mar. 24, 1998
5727453 Apparatus and method for thawing frozen food product Mar. 17, 1998
5727393 Multi-stage cooling system for commerical refrigeration Mar. 17, 1998
5715689 Evaporator for combination refrigerator/freezer Feb. 10, 1998
5709090 Refrigerating system and operating method thereof Jan. 20, 1998
5669222 Refrigeration passive defrost system Sep. 23, 1997
5664429 Air-conditioning device for electric automobiles Sep. 9, 1997
5553457 Cooling device Sep. 10, 1996
5528908 Blocked fan detection system for heat pump Jun. 25, 1996
5507154 Self-calibrating defrost controller Apr. 16, 1996
5440890 Blocked fan detection system for heat pump Aug. 15, 1995
5406805 Tandem refrigeration system Apr. 18, 1995
5385028 Method of odor elimination on A/C heat pump systems Jan. 31, 1995
5315836 Air cooling unit having a hot gas defrost circuit May. 31, 1994

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