JOHNSON CONTROLS-HITACHI AIR CONDITIONING TECHNOLOGY (HONG KONG) LIMITED

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
F25B REFRIGERATION MACHINES, PLANTS, OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS 4726
 
  
 
F04C ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS 3517
 
  
 
F24F AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING 2324
 
  
 
F01C ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES 1614
 
  
 
F03C POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS 1411
 
  
 
F25D REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT COVERED BY ANY OTHER SUBCLASS 1135
 
  
 
F04B POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS 854
 
  
 
F28F DETAILS OF HEAT-EXCHANGE OR HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION 844
 
  
 
H02K DYNAMO-ELECTRIC MACHINES 899
 
  
 
F28D HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT 441

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2018/0045,200 SCREW COMPRESSOROct 28, 15Feb 15, 18[F04C]
2017/0306,951 SCROLL COMPRESSOR AND REFRIGERATION CYCLE APPARATUS USING THE SAMESep 29, 15Oct 26, 17[F04C, F25B]
2017/0307,246 MAINTENANCE SYSTEM AND MAINTENANCE METHOD OF AIR CONDITIONERJan 07, 16Oct 26, 17[B23P, F24F]
2017/0299,201 INDOOR UNIT FOR AIR CONDITIONERNov 28, 14Oct 19, 17[F24F]
2017/0204,314 AIR CONDITIONERJun 05, 15Jul 20, 17[C09K, C10M, F25B]
2017/0117,762 PERMANENT-MAGNET DYNAMO-ELECTRIC MACHINE AND COMPRESSOR USING THE SAMEMar 24, 15Apr 27, 17[H02K, F04C, F25B]
2017/0010,014 AIR CONDITIONER TEST OPERATION APPLICATION, AND AIR CONDITIONER TEST OPERATION SYSTEMJan 27, 14Jan 12, 17[G05B, F24F]
2016/0356,518 INDOOR UNIT OF AIR CONDITIONER AND AIR CONDITIONEROct 27, 14Dec 08, 16[F24F]
2016/0348,927 AIR CONDITIONEROct 27, 14Dec 01, 16[F25B, F24F]
2016/0348,951 HEAT EXCHANGERMay 26, 16Dec 01, 16[F28D, F25B, F28F]

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9885525 Aft conditionerJan 28, 15Feb 06, 18[F28D, F25B, F28F, F24F]
9879678 Scroll compressorMar 27, 13Jan 30, 18[F04C, F03C, F01C]
D804000 Outdoor unit for air conditionerFeb 26, 16Nov 28, 17[2604]
9803900 Screw compressor and chiller unit provided with sameOct 19, 16Oct 31, 17[F04C, F25B, F03C, B01D]
9618218 Air conditionerFeb 09, 12Apr 11, 17[F24F]
9568003 Screw compressor and chiller unit provided with sameJul 10, 13Feb 14, 17[F04C, F25B, F03C, B01D]
9534827 Air heat exchangerJun 07, 12Jan 03, 17[F28D, F28F, F25D]
9500196 Scroll compressor with intermittent communication between back pressure chamber and compression chambersFeb 11, 14Nov 22, 16[F04C]
9470230 Refrigerant compressor and refrigeration cycle apparatus using the sameApr 25, 11Oct 18, 16[F04B, F04C, F25B]
9353751 Sealed scroll compressor for heliumOct 30, 13May 31, 16[F04C, F03C, F01C]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2016/0054,011 Outdoor Unit and Air Conditioner Having the Outdoor UnitAbandonedAug 19, 15Feb 25, 16[F04D, F24F]
2012/0294,748 Sealed Scroll Compressor for HeliumAbandonedMay 16, 12Nov 22, 12[F01C]
7007505 Refrigerating deviceExpiredMay 26, 04Mar 07, 06[F25B]
6948552 Ceiling embedded type indoor unitExpiredOct 18, 01Sep 27, 05[F24H, F25D]
6938429 Refrigerating and air-conditioning systemExpiredOct 28, 03Sep 06, 05[0000]
6925824 Apparatus for driving a compressor and a refrigerating air conditionerExpiredSep 08, 03Aug 09, 05[F25B]
6926075 Plate type heat exchangerExpiredJun 24, 03Aug 09, 05[F28F]
6884049 Screw compressor and method of manufacturing rotor for the sameExpiredNov 20, 02Apr 26, 05[F01C]

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