Assignee
KALSI ENG INC
US·36 granted patents·5 pending applications·2,091 citations·filing 1991–2025
Top patents by PatentIndex Score
41 records- 0199US5873576ASkew and twist resistant hydrodynamic rotary shaft sealKALSI ENG INC·Filed 1997·Granted Feb 23, 1999·126 cites·7 claims
- 0299US5738358AExtrusion resistant hydrodynamically lubricated multiple modulus rotary shaft sealKALSI ENG INC·Filed 1996·Granted Apr 14, 1998·154 cites·28 claims
- 0398US6494462B2Rotary seal with improved dynamic interfaceKALSI ENG INC·Filed 2000·Granted Dec 17, 2002·77 cites·31 claims
- 0498US6036192ASkew and twist resistant hydrodynamic rotary shaft sealKALSI ENG INC·Filed 1999·Granted Mar 14, 2000·105 cites·24 claims
- 0597US6382634B1Hydrodynamic seal with improved extrusion abrasion and twist resistanceKALSI ENG INC·Filed 2000·Granted May 7, 2002·61 cites·21 claims
- 0697US6315302B1Skew resisting hydrodynamic sealKALSI ENG INC·Filed 2000·Granted Nov 13, 2001·87 cites·27 claims
- 0797US6227547B1High pressure rotary shaft sealing mechanismKALSI ENG INC·Filed 1999·Granted May 8, 2001·116 cites·31 claims
- 0897US6120036AExtrusion resistant hydrodynamically lubricated rotary shaft sealKALSI ENG INC·Filed 1998·Granted Sep 19, 2000·88 cites·26 claims
- 0997US5678829AHydrodynamically lubricated rotary shaft seal with environmental side grooveKALSI ENG INC·Filed 1996·Granted Oct 21, 1997·123 cites·20 claims
- 1096US7562878B2Low torque hydrodynamic lip geometry for bi-directional rotation sealsKALSI ENG INC·Filed 2006·Granted Jul 21, 2009·28 cites·15 claims
- 1196US6334619B1Hydrodynamic packing assemblyKALSI ENG INC·Filed 1999·Granted Jan 1, 2002·90 cites·33 claims
- 1296US6109618ARotary seal with enhanced lubrication and contaminant flushingKALSI ENG INC·Filed 1998·Granted Aug 29, 2000·97 cites·36 claims
- 1395US11085470B2Flow conditioning assemblyKALSI ENG INC·Filed 2020·Granted Aug 10, 2021·11 cites·106 claims
- 1495US6460635B1Load responsive hydrodynamic bearingKALSI ENG INC·Filed 2000·Granted Oct 8, 2002·87 cites·39 claims
- 1594US10302200B2Seal for bi-directional rotation and pressureKALSI ENG INC·Filed 2018·Granted May 28, 2019·8 cites·33 claims
- 1694US7770898B2Stabilizing geometry for hydrodynamic rotary sealsKALSI ENG INC·Filed 2007·Granted Aug 10, 2010·24 cites·22 claims
- 1794US6561520B2Hydrodynamic rotary coupling sealKALSI ENG INC·Filed 2001·Granted May 13, 2003·75 cites·27 claims
- 1892US6007105ASwivel seal assemblyKALSI ENG INC·Filed 1998·Granted Dec 28, 1999·156 cites·30 claims
- 1991US7798496B2Rotary shaft sealing assemblyKALSI ENG INC·Filed 2004·Granted Sep 21, 2010·34 cites·35 claims
- 2091US5195754ALaterally translating seal carrier for a drilling mud motor sealed bearing assemblyKALSI ENG INC·Filed 1991·Granted Mar 23, 1993·147 cites·29 claims
- 2190US5823541ARod seal cartridge for progressing cavity artificial lift pumpsKALSI ENG INC·Filed 1996·Granted Oct 20, 1998·163 cites·29 claims
- 2288US11261891B2Flow conditioning assemblyKALSI ENG INC·Filed 2021·Granted Mar 1, 2022·2 cites·56 claims
- 2388US7052020B2Hydrodynamic rotary sealKALSI ENG INC·Filed 2003·Granted May 30, 2006·33 cites·41 claims
- 2488US5230520AHydrodynamically lubricated rotary shaft seal having twist resistant geometryKALSI ENG INC·Filed 1992·Granted Jul 27, 1993·123 cites·9 claims
- 2584US11668399B2Rotary seal and method of making sameKALSI ENG INC·Filed 2019·Granted Jun 6, 2023·3 cites·26 claims
- 2682US10330203B2High pressure dynamic sealing deviceKALSI ENG INC·Filed 2017·Granted Jun 25, 2019·3 cites·36 claims
- 2780US9121504B2Rotary seal with improved film distributionKALSI ENG INC·Filed 2013·Granted Sep 1, 2015·3 cites·99 claims
- 2879US9429238B2Dynamic backup ring assemblyKALSI ENG INC·Filed 2013·Granted Aug 30, 2016·4 cites·195 claims
- 2974US12271214B2Miniature passive thermal control valve for mixing or splitting single-phase fluid with adjustable thermal actuatorKALSI ENG INC·Filed 2024·Granted Apr 8, 2025·0 cites·34 claims
- 3074US9845879B2High pressure dynamic sealing arrangementKALSI ENG INC·Filed 2016·Granted Dec 19, 2017·4 cites·24 claims
- 3172US6338469B1Flexible wedge gate valveKALSI ENG INC·Filed 1999·Granted Jan 15, 2002·34 cites·8 claims
- 3263US12442449B2Bidirectional hydrodynamic rotary sealKALSI ENG INC·Filed 2024·Granted Oct 14, 2025·0 cites·21 claims
- 3362US11989043B2Miniature passive thermal control valve for mixing or splitting single-phase fluid with adjustable thermal actuatorKALSI ENG INC·Filed 2022·Granted May 21, 2024·0 cites·25 claims
- 3462US10435981B2Seal arrangement for rotating equipmentKALSI ENG INC·Filed 2018·Granted Oct 8, 2019·1 cites·24 claims
- 3562US5657961AFlexible wedge gate valveKALSI ENG INC·Filed 1995·Granted Aug 19, 1997·24 cites·18 claims
- 3659US2025314319A1Fast-responding passive flow rate limiting valve for high pressure gas applicationsKALSI ENG INC·Filed 2025·Application pending·0 cites
- 3758US2024401700A1Spring-loaded gland wall seal carrier for reverse acting differential pressureKALSI ENG INC·Filed 2024·Application pending·0 cites
- 3850US11300208B2Seal assembly with anti-rotation and stability featuresKALSI ENG INC·Filed 2019·Granted Apr 12, 2022·0 cites·33 claims
- 3950US2024353871A1Passive modulating design for fast responding control valves for high pressure gas applicationsKALSI ENG INC·Filed 2024·Application pending·0 cites
- 4049US2007013143A1Filled hydrodynamic seal with contact pressure control, anti-rotation means and filler retention meansKALSI ENG INC·Filed 2006·Application pending·0 cites
- 4143US2006171616A1Hydrodynamic thrust bearing assemblyKALSI ENG INC·Filed 2006·Application pending·0 cites
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →