Assignee
CRANE JOHN INC
US·59 granted patents·12 pending applications·2,278 citations·filing 1988–2025
Top patents by PatentIndex Score
71 records- 0197US7377518B2Mechanical seal ring assembly with hydrodynamic pumping mechanismCRANE JOHN INC·Filed 2005·Granted May 27, 2008·61 cites·13 claims
- 0296US5201531AFace seal with double spiral groovesCRANE JOHN INC·Filed 1992·Granted Apr 13, 1993·126 cites·20 claims
- 0393US5713576AGas lubricated barrier sealCRANE JOHN INC·Filed 1994·Granted Feb 3, 1998·77 cites·26 claims
- 0492US5441283ANon-contacting mechanical face sealCRANE JOHN INC·Filed 1993·Granted Aug 15, 1995·69 cites·24 claims
- 0592US5249812ABarrier seal systemsCRANE JOHN INC·Filed 1990·Granted Oct 5, 1993·83 cites·4 claims
- 0691US11473680B2Non-collapsible flexible sealing membrane and seal assembly for rotary shaft equipmentCRANE JOHN INC·Filed 2020·Granted Oct 18, 2022·6 cites·18 claims
- 0791US6626436B2Monitoring seal systemCRANE JOHN INC·Filed 2000·Granted Sep 30, 2003·55 cites·36 claims
- 0891US5947479AMechanical seal with flexible metal diaphragmCRANE JOHN INC·Filed 1995·Granted Sep 7, 1999·78 cites·68 claims
- 0990US10634250B2Non-collapsible flexible sealing membrane and seal assembly for rotary shaft equipmentCRANE JOHN INC·Filed 2017·Granted Apr 28, 2020·10 cites·19 claims
- 1090US9790952B2Seal monitoring and control systemCRANE JOHN INC·Filed 2014·Granted Oct 17, 2017·11 cites·10 claims
- 1190US5529315ATandem seal arrangement for mechanical face sealsCRANE JOHN INC·Filed 1994·Granted Jun 25, 1996·113 cites·10 claims
- 1290US5492341ANon-contacting, gap-type seal having a ring with a patterned seal faceCRANE JOHN INC·Filed 1993·Granted Feb 20, 1996·75 cites·20 claims
- 1390US5375853ASecondary containment sealCRANE JOHN INC·Filed 1992·Granted Dec 27, 1994·65 cites·15 claims
- 1489US6142478AGas lubricated slow speed sealCRANE JOHN INC·Filed 1998·Granted Nov 7, 2000·101 cites·30 claims
- 1588US11821523B2Non-pusher dry gas seal with sealing elastomer and systems utilizing sameCRANE JOHN INC·Filed 2020·Granted Nov 21, 2023·3 cites·29 claims
- 1687US5217233ASpiral groove seal system for sealing a high pressure gasCRANE JOHN INC·Filed 1989·Granted Jun 8, 1993·58 cites·22 claims
- 1787US5071141ASpiral groove seal arrangement for high vapor-pressure liquidsCRANE JOHN INC·Filed 1990·Granted Dec 10, 1991·63 cites·18 claims
- 1886US6398223B1Mechanical face sealCRANE JOHN INC·Filed 2000·Granted Jun 4, 2002·26 cites·9 claims
- 1986US6210107B1Barrier seal systemsCRANE JOHN INC·Filed 1995·Granted Apr 3, 2001·55 cites·11 claims
- 2085US6655693B2Non-contacting gas compressor sealCRANE JOHN INC·Filed 2001·Granted Dec 2, 2003·50 cites·45 claims
- 2185US5957461ARadial lip shaft sealCRANE JOHN INC·Filed 1997·Granted Sep 28, 1999·58 cites·20 claims
- 2284US6716800B2Composite body of silicon carbide and binderless carbon, process for producing such composite body, and article of manufacturing utilizing such composite body for tribological applicationsCRANE JOHN INC·Filed 2002·Granted Apr 6, 2004·22 cites·98 claims
- 2384US5090712ANon-contacting, gap-type seal having a ring with a patterned microdam seal faceCRANE JOHN INC·Filed 1990·Granted Feb 25, 1992·54 cites·43 claims
- 2483US5172918ASecondary seal for gas turbinesCRANE JOHN INC·Filed 1992·Granted Dec 22, 1992·55 cites·10 claims
- 2582US6789803B2Mechanical face sealCRANE JOHN INC·Filed 2003·Granted Sep 14, 2004·20 cites·19 claims
- 2682US5468002AMechanical end face seal having an improved mating ringCRANE JOHN INC·Filed 1993·Granted Nov 21, 1995·50 cites·15 claims
- 2782US5199720ASplit mechanical face sealCRANE JOHN INC·Filed 1991·Granted Apr 6, 1993·55 cites·30 claims
- 2881US6568687B2Mechanical face sealCRANE JOHN INC·Filed 2001·Granted May 27, 2003·19 cites·46 claims
- 2980US6082737ARotary shaft monitoring seal systemCRANE JOHN INC·Filed 1997·Granted Jul 4, 2000·40 cites·17 claims
- 3079US6299173B1Mechanical end face seal ring having a compliant seal faceCRANE JOHN INC·Filed 1999·Granted Oct 9, 2001·42 cites·25 claims
- 3179US2024093784A1Mechanical seal with a seal face having channelsCRANE JOHN INC·Filed 2023·Application pending·0 cites
- 3278US5975538ARadial lip shaft sealCRANE JOHN INC·Filed 1997·Granted Nov 2, 1999·50 cites·12 claims
- 3378US5938206APressure responsive primary ring for a non-contacting mechanical end face sealCRANE JOHN INC·Filed 1997·Granted Aug 17, 1999·46 cites·6 claims
- 3478US5490679ASeal ring designCRANE JOHN INC·Filed 1993·Granted Feb 13, 1996·58 cites·20 claims
- 3577US7438519B2Sealing system for slurry pumpCRANE JOHN INC·Filed 2005·Granted Oct 21, 2008·20 cites·78 claims
- 3677US5605339ANon-contacting mechanical face sealCRANE JOHN INC·Filed 1995·Granted Feb 25, 1997·35 cites·11 claims
- 3777US5538649ACarbon composite mateiral for tribological applicationsCRANE JOHN INC·Filed 1995·Granted Jul 23, 1996·40 cites·38 claims
- 3875US7611151B2Mechanical seal with thermally stable mating ringCRANE JOHN INC·Filed 2007·Granted Nov 3, 2009·8 cites·26 claims
- 3973US6715985B2Gas conditioning systemCRANE JOHN INC·Filed 2002·Granted Apr 6, 2004·22 cites·55 claims
- 4073US5454572AMechanical end face seal systemCRANE JOHN INC·Filed 1994·Granted Oct 3, 1995·41 cites·5 claims
- 4173US5114163ASplit mechanical face sealCRANE JOHN INC·Filed 1990·Granted May 19, 1992·39 cites·24 claims
- 4271US9651157B2Split seal assembly and methodCRANE JOHN INC·Filed 2014·Granted May 16, 2017·2 cites·19 claims
- 4371US5700013ASecondary seal with mechanical gas sealCRANE JOHN INC·Filed 1997·Granted Dec 23, 1997·46 cites·5 claims
- 4471US5039112AMulti-layer lip seal assemblyCRANE JOHN INC·Filed 1988·Granted Aug 13, 1991·31 cites·14 claims
- 4571US4884945ADynamic seal arrangement for impeller pumpCRANE JOHN INC·Filed 1988·Granted Dec 5, 1989·40 cites·8 claims
- 4671US2026014497A1Filter element for use in a filter systemCRANE JOHN INC·Filed 2025·Application pending·0 cites
- 4770US12055222B2Non-collapsible flexible sealing membrane and seal assembly for rotary shaft equipmentCRANE JOHN INC·Filed 2022·Granted Aug 6, 2024·0 cites·12 claims
- 4870US6007069AMechanical face sealCRANE JOHN INC·Filed 1997·Granted Dec 28, 1999·44 cites·13 claims
- 4969US2026036205A1Sealing ringsCRANE JOHN INC·Filed 2025·Application pending·0 cites
- 5068US12181050B2Ring with recirculating grooves for dry gas sealCRANE JOHN INC·Filed 2023·Granted Dec 31, 2024·0 cites·24 claims
Showing the top 50 of 71 patent records by PatentIndex Score.
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