Clark-Reliance Corporation

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G01F MEASURING VOLUME, VOLUME FLOW, MASS FLOW, OR LIQUID LEVEL; METERING BY VOLUME 455
 
  
 
F16K VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING172
 
  
 
G01L MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE 155
 
  
 
G02B OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS 1204

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2016/0040,787 VALVE WITH DIFFERENT THREADS FOR PREVENTING ROTATION OF AND LOCKING BONNET WITHIN VALVEAug 07, 15Feb 11, 16[F16K]

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9920840 Valve with different threads for preventing rotation of and locking bonnet within valveAug 07, 15Mar 20, 18[F16K]
9329069 Liquid level system with blowdown featureDec 03, 13May 03, 16[G01F]
7047806 Liquid level gage and illuminator thereforSep 12, 03May 23, 06[G01F]
6575010 Method and system for detecting and cross-checking faulty sensors in liquid level indicators and controllersNov 29, 01Jun 10, 03[G01F]
5743137 Magnetic float assemblyNov 09, 95Apr 28, 98[G01F]
5243929 Tubular sanitary sight indicatorSep 24, 91Sep 14, 93[G01L, G02B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2005/0109,105 Liquid level indicator using lightsAbandonedOct 19, 04May 26, 05[G08B, G01F]
2005/0056,092 Liquid level indicator using lightsAbandonedSep 12, 03Mar 17, 05[G01F]
2004/0076,003 Apparatus for illuminating through sight devicesAbandonedOct 19, 02Apr 22, 04[F21V]
6666086 Automatic boiler level controllerExpiredJun 29, 01Dec 23, 03[G08B, G01F]
5647656 Illuminated fluid level indicatorExpiredMay 12, 95Jul 15, 97[G01F]
5645336 Illuminated fluid level indicatorExpiredMay 29, 96Jul 08, 97[G01D, G01F]
5351036 Microwave-based point liquid level monitoring systemExpiredDec 10, 91Sep 27, 94[G08B]
5343826 Fluid indicator assemblies for sight flow apparatusExpiredJul 31, 92Sep 06, 94[G01F]
5297429 Sanitary sight indicatorExpiredMay 20, 93Mar 29, 94[G01F]
5249464 Sight flow apparatus with cartridgeExpiredAug 19, 91Oct 05, 93[G01F]
4507521 High pressure electrical conductivity probeExpiredSep 29, 82Mar 26, 85[H01B]
4387733 Dual fulcrum steam trapExpiredMay 19, 81Jun 14, 83[F16T]
4300719 Steam trapsExpiredFeb 20, 80Nov 17, 81[F16T]
4292998 Pressure reducing valveExpiredJul 30, 79Oct 06, 81[F16K]
4276354 Steam traps or the likeExpiredNov 19, 79Jun 30, 81[F16T]
4197877 Pressure reducing valveExpiredJan 05, 78Apr 15, 80[F16K]

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