John Crane 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; SEALINGS3020
 
  
 
F04D NON-POSITIVE-DISPLACEMENT PUMPS470
 
  
 
F01D NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES 362
 
  
 
C10M LUBRICATING COMPOSITIONS 247
 
  
 
B21D WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING 155
 
  
 
C04B LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS 167
 
  
 
F25B REFRIGERATION MACHINES, PLANTS, OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS 167
 
  
 
G01N INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES 1205

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2018/0017,161 NON-COLLAPSIBLE FLEXIBLE SEALING MEMBRANE AND SEAL ASSEMBLY FOR ROTARY SHAFT EQUIPMENTJul 12, 17Jan 18, 18[F16J]

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9790952 Seal monitoring and control systemFeb 12, 14Oct 17, 17[G01M, F04D, F16J]
9651157 Split seal assembly and methodFeb 13, 14May 16, 17[F16J]
9145783 Seal gas monitoring and control systemAug 01, 12Sep 29, 15[G01N, F25B, F01D]
8651494 Split seal assembly and methodMar 14, 11Feb 18, 14[F16J]
8651801 Seal monitoring and control systemMay 20, 09Feb 18, 14[F01D, F16J]
7959156 Mechanical seal with enhanced face stabilityMar 07, 07Jun 14, 11[F16J]
7857319 Mechanical seal with banded ringJun 06, 07Dec 28, 10[F16J]
7611151 Mechanical seal with thermally stable mating ringApr 06, 07Nov 03, 09[F16J]
7438519 Sealing system for slurry pumpAug 17, 05Oct 21, 08[F04D]
7377518 Mechanical seal ring assembly with hydrodynamic pumping mechanismApr 07, 05May 27, 08[F16J]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2006/0222,537 Shaft couplingAbandonedFeb 23, 05Oct 05, 06[F04B]
6082737 Rotary shaft monitoring seal systemExpiredAug 20, 97Jul 04, 00[F16J]
5975538 Radial lip shaft sealExpiredJun 19, 97Nov 02, 99[F16S]
5967525 Drive mechanism for a rotating mechanical split seal and method of assembly thereofExpiredJul 10, 98Oct 19, 99[F16J]
5913521 Rotating seal ring component kit for a mechanical split sealExpiredAug 29, 97Jun 22, 99[F16J]
5605339 Non-contacting mechanical face sealExpiredAug 14, 95Feb 25, 97[F16J]
5492341 Non-contacting, gap-type seal having a ring with a patterned seal faceExpiredJun 28, 93Feb 20, 96[F16J]
5490682 Split mechanical face sealExpiredFeb 21, 95Feb 13, 96[F16J]
5468002 Mechanical end face seal having an improved mating ringExpiredOct 25, 93Nov 21, 95[F16J]
5454572 Mechanical end face seal systemExpiredSep 06, 94Oct 03, 95[F16J]
5441283 Non-contacting mechanical face sealExpiredAug 03, 93Aug 15, 95[F16J]
5375853 Secondary containment sealExpiredSep 18, 92Dec 27, 94[F16J]
5253876 System and method for actively cooling dry-running gas sealsExpiredAug 06, 92Oct 19, 93[F16J]
5249812 Barrier seal systemsExpiredMar 12, 90Oct 05, 93[F16J]
5217233 Spiral groove seal system for sealing a high pressure gasExpiredOct 30, 89Jun 08, 93[F16J]
5172918 Secondary seal for gas turbinesExpiredApr 28, 92Dec 22, 92[F16J]
5114163 Split mechanical face sealExpiredMay 25, 90May 19, 92[F16J]
5090712 Non-contacting, gap-type seal having a ring with a patterned microdam seal faceExpiredJul 17, 90Feb 25, 92[F16C, F16J]
5071141 Spiral groove seal arrangement for high vapor-pressure liquidsExpiredJul 17, 90Dec 10, 91[F16J]
5039112 Multi-layer lip seal assemblyExpiredNov 25, 88Aug 13, 91[B65D, F02F, F16J]

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