EARTH TO AIR SYSTEMS, LLC

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
F25D REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT COVERED BY ANY OTHER SUBCLASS 1333
 
  
 
F25B REFRIGERATION MACHINES, PLANTS, OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS 761
 
  
 
F24J PRODUCTION OR USE OF HEAT NOT OTHERWISE PROVIDED FOR 123
 
  
 
F28B STEAM OR VAPOUR CONDENSERS 17
 
  
 
F28D HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT 144
 
  
 
G05D SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES 183

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
8931295 Multi-faceted designs for a direct exchange geothermal heating/cooling systemJan 18, 08Jan 13, 15[F25B, F25D]
8833098 Direct exchange heating/cooling systemJul 16, 08Sep 16, 14[F24J, G05D, F25D]
8776543 DX system interior heat exchanger defrost design for heat to cool modeMay 14, 09Jul 15, 14[F25D]
8402780 Oil return for a direct exchange geothermal heat pumpMay 04, 09Mar 26, 13[F25B]
8109110 Advanced DX system design improvementsOct 14, 08Feb 07, 12[F25D]
8082751 DX system with filtered suction line, low superheat, and oil provisionsNov 07, 08Dec 27, 11[F25B]
8033127 Direct exchange system design improvementsJul 16, 08Oct 11, 11[F25D]
7856839 Direct exchange geothermal heating/cooling system sub-surface tubing installation with supplemental sub-surface tubing configurationDec 11, 06Dec 28, 10[F25D]
7841200 Sub-surface tubing spacer means for direct expansion heating/cooling systemsMay 19, 04Nov 30, 10[F24J, F25D]
7841383 Encasement assembly for installation of sub-surface refrigerant tubing in a direct exchange heating/cooling systemSep 29, 06Nov 30, 10[F28D]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2015/0013,370 Ground Loops and Insulation for Direct Exchange Geothermal SystemsAbandonedApr 09, 13Jan 15, 15[F24J, F25B]
8468842 DX system having heat to cool valveExpiredApr 21, 09Jun 25, 13[F25B, F25D]
2011/0209,848 Heat Transfer Refrigerant Transport Tubing Coatings and Insulation for a Direct Exchange Geothermal Heating/Cooling System and Tubing Spool Core SizeAbandonedSep 23, 09Sep 01, 11[F24J]
2009/0120,606 Double DX Hydronic SystemAbandonedNov 07, 08May 14, 09[F24J]
7401641 Vertically oriented direct exchange/geothermal heating/cooling system sub-surface tubing installation meansExpiredMay 24, 04Jul 22, 08[F28F]
2008/0016,894 Advanced Direct Exchange Geothermal Heating/Cooling System DesignAbandonedJul 03, 07Jan 24, 08[F24J]
2007/0151,280 Heat Pump Dehumidification SystemAbandonedJan 29, 07Jul 05, 07[F25B, F25D]
2006/0086,121 Capillary tube/plate refrigerant/air heat exchanger for use in conjunction with a method and apparatus for inhibiting ice accumulation in HVAC systemsAbandonedOct 13, 05Apr 27, 06[F25B, F28F, F25D]
6931879 Closed loop direct expansion heating and cooling system with auxiliary refrigerant pumpExpiredFeb 11, 02Aug 23, 05[F25D]
6789608 Thermally exposed, centrally insulated geothermal heat exchange unitExpiredApr 22, 02Sep 14, 04[F28D]
6751974 Sub-surface and optionally accessible direct expansion refrigerant flow regulating deviceExpiredDec 31, 02Jun 22, 04[F25B, F25D]

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