HRST, INC.

Patent Owner

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
F22B METHODS OF STEAM GENERATION; STEAM BOILERS 320
 
  
 
F02C GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS 257
 
  
 
B08B CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL 157
 
  
 
B23K SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM 192
 
  
 
F01K STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES 127
 
  
 
F02G HOT-GAS OR COMBUSTION- PRODUCT POSITIVE-DISPLaCEMENT ENGINE PLANTS 122
 
  
 
F16J PISTONS; CYLINDERS; PRESSURE VESSELS IN GENERAL; SEALINGS149
 
  
 
F16L PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL169

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2016/0376,986 Dual Purpose Heat Transfer Surface DeviceJun 22, 16Dec 29, 16[F02C, F02G]

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9435228 Air cooling system and method for a heat recovery steam generator inletApr 09, 14Sep 06, 16[F22G, F01K, F02C, F22B]
9091349 Self-energizing sealAug 08, 12Jul 28, 15[F16J]
8002902 Boiler cleaning apparatus and methodMay 15, 08Aug 23, 11[B08B]
7621237 Economizer for a steam generatorAug 21, 07Nov 24, 09[F22B]
7237806 Expansion sealDec 07, 05Jul 03, 07[F16L]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2013/0220,238 Dual Chemistry Steam DrumAbandonedFeb 28, 12Aug 29, 13[F22B]
2012/0198,846 AIR COOLING SYSTEM AND METHOD FOR A HEAT RECOVERY STEAM GENERATOR INLETAbandonedFeb 04, 11Aug 09, 12[F01K]

Top Inventors for This Owner

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