Kalsi Engineering, Inc.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
F16J PISTONS; CYLINDERS; PRESSURE VESSELS IN GENERAL; SEALINGS3119
 
  
 
E21B EARTH OR ROCK DRILLING 294
 
  
 
F16K VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING271
 
  
 
F16L PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL268

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9845879 High pressure dynamic sealing arrangementAug 18, 16Dec 19, 17[F16L, E21B, F16J]
9429238 Dynamic backup ring assemblyOct 11, 13Aug 30, 16[F16J]
9316319 Pressure-balanced floating seal housing assembly and methodNov 30, 10Apr 19, 16[F16J]
9121503 Rotary seal with supported inletJun 15, 10Sep 01, 15[F16J]
9121504 Rotary seal with improved film distributionSep 16, 13Sep 01, 15[F16J]
9109703 Hydrodynamic backup ringFeb 11, 11Aug 18, 15[F16J]
9103445 Rotary seal with truncated wave formApr 08, 10Aug 11, 15[F16J]
9086151 Low torque hydrodynamic lip geometry for rotary sealsSep 23, 11Jul 21, 15[F16J]
8550467 Rotary seal with improved film distributionSep 02, 08Oct 08, 13[F16J]
8505924 Rotary shaft sealing assemblySep 20, 10Aug 13, 13[F16J]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2010/0259,015 HYDRODYNAMIC SEAL WITH IMPROVED EXCLUSION AND LUBRICATIONAbandonedApr 07, 10Oct 14, 10[F16J]
2007/0160,314 Bidirectional hydrodynamic thrust bearingAbandonedDec 14, 06Jul 12, 07[F16C]
2007/0013,143 Filled hydrodynamic seal with contact pressure control, anti-rotation means and filler retention meansAbandonedJul 18, 06Jan 18, 07[F16J]
2006/0171,616 Hydrodynamic thrust bearing assemblyAbandonedJan 27, 06Aug 03, 06[F16C]
2003/0205,864 Rotary sealing deviceAbandonedNov 20, 02Nov 06, 03[F02F]

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