ZHEJIANG DUNAN HETIAN METAL CO., LTD.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
F16K VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING568
 
  
 
F25B REFRIGERATION MACHINES, PLANTS, OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS 365
 
  
 
G01K MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR 343
 
  
 
G05D SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES 282
 
  
 
G01F MEASURING VOLUME, VOLUME FLOW, MASS FLOW, OR LIQUID LEVEL; METERING BY VOLUME 158
 
  
 
2301 FLUID DISTRIBUTION EQUIPMENT149

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2014/0374,633 Microvalve Having Improved Resistance to ContaminationJun 24, 14Dec 25, 14[F16K]

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9772235 Method of sensing superheatDec 30, 14Sep 26, 17[G01K]
9714780 On-demand micro expansion valve for a refrigeration systemJun 24, 14Jul 25, 17[F25B]
9404815 Superheat sensor having external temperature sensorSep 15, 15Aug 02, 16[G01K]
9328832 Wheatstone bridge check valve arrangementDec 20, 13May 03, 16[F16K]
9328850 Microvalve having improved air purging capabilityJun 24, 14May 03, 16[F16K]
9235219 Microvalve with integrated flow sensing capabilityDec 19, 13Jan 12, 16[F16K, G05D, F25B, G01F]
9188375 Control element and check valve assemblyDec 04, 13Nov 17, 15[F16K, F25B, G05D]
9140613 Superheat sensorJul 31, 12Sep 22, 15[G01K]
D548818 Cut-off valveJan 13, 06Aug 14, 07[2301]

Expired/Abandoned/Withdrawn Patents

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