Inventor · disambiguated record
Vishnu M. Sishtla
Also filed as: SISHTLA VISHNU · SISHTLA VISHNU M · SISHTLA VISHNU MOHAN
101 granted patents·27 pending applications·792 citations·filing 1989–2025
99Inventor score
Top patents by PatentIndex Score
128 records- 0196US10228168B2Compressor bearing coolingCARRIER CORP·Filed 2014·Granted Mar 12, 2019·19 cites·20 claims
- 0295US8104298B2Lubrication system for touchdown bearings of a magnetic bearing compressorSISHTLA VISHNU M·Filed 2005·Granted Jan 31, 2012·21 cites·13 claims
- 0394US11585347B2Mixed-flow compressor configuration for a refrigeration systemCARRIER CORP·Filed 2020·Granted Feb 21, 2023·4 cites·20 claims
- 0493US11592034B2Vaneless supersonic diffuser for compressorCARRIER CORP·Filed 2020·Granted Feb 28, 2023·4 cites·21 claims
- 0593US11499561B2Centrifugal compressor with recirculation passageCARRIER CORP·Filed 2021·Granted Nov 15, 2022·2 cites·20 claims
- 0692US11555502B1Compressor including inlet guide vanesCARRIER CORP·Filed 2021·Granted Jan 17, 2023·3 cites·18 claims
- 0791US11156226B2Centrifugal compressor with recirculation passageCARRIER CORP·Filed 2019·Granted Oct 26, 2021·4 cites·18 claims
- 0890US10527050B2Refrigerant lube systemCARRIER CORP·Filed 2015·Granted Jan 7, 2020·3 cites·4 claims
- 0989US10267539B2Hot gas bypass for two-stage compressorCARRIER CORP·Filed 2015·Granted Apr 23, 2019·4 cites·17 claims
- 1089US5404964ASystem for reducing oil migration from a transmissionCARRIER CORP·Filed 1992·Granted Apr 11, 1995·45 cites·2 claims
- 1187US6216474B1Part load performance of variable speed screw compressorCARRIER CORP·Filed 1999·Granted Apr 17, 2001·43 cites·4 claims
- 1287US4997340ABalance piston and seal arrangementCARRIER CORP·Filed 1989·Granted Mar 5, 1991·53 cites·9 claims
- 1385US10690148B2Diffuser restriction ringCARRIER CORP·Filed 2016·Granted Jun 23, 2020·3 cites·21 claims
- 1485US6036432AMethod and apparatus for protecting centrifugal compressors from rotating stall vibrationsCARRIER CORP·Filed 1998·Granted Mar 14, 2000·54 cites·7 claims
- 1584US11421708B2Refrigeration system mixed-flow compressorCARRIER CORP·Filed 2019·Granted Aug 23, 2022·3 cites·12 claims
- 1684US10364826B2Inlet guide vane mechanismCARRIER CORP·Filed 2014·Granted Jul 30, 2019·5 cites·17 claims
- 1783US10648702B2Low capacity, low-GWP, HVAC systemCARRIER CORP·Filed 2016·Granted May 12, 2020·2 cites·20 claims
- 1883US6547520B2Rotating vane diffuser for a centrifugal compressorCARRIER CORP·Filed 2001·Granted Apr 15, 2003·32 cites·19 claims
- 1983US6506031B2Screw compressor with axial thrust balancing and motor cooling deviceCARRIER CORP·Filed 2001·Granted Jan 14, 2003·20 cites·8 claims
- 2083US2025102195A1Magnetic bearing compressor protectionCARRIER CORP·Filed 2024·Application pending·0 cites
- 2182US11655825B2Compressor including aerodynamic swirl between inlet guide vanes and impeller bladesCARRIER CORP·Filed 2021·Granted May 23, 2023·1 cites·13 claims
- 2282US10968919B2Two-stage centrifugal compressorCARRIER CORP·Filed 2017·Granted Apr 6, 2021·2 cites·14 claims
- 2382US10823467B2Low-oil refrigerants and vapor compression systemsCARRIER CORP·Filed 2016·Granted Nov 3, 2020·2 cites·18 claims
- 2482US10781857B2Hybrid bearingsCARRIER CORP·Filed 2017·Granted Sep 22, 2020·2 cites·20 claims
- 2582US5267452ABack pressure valveCARRIER CORP·Filed 1993·Granted Dec 7, 1993·48 cites·14 claims
- 2681US9732997B2Low leakage seal for low pressure systemCARRIER CORP·Filed 2014·Granted Aug 15, 2017·5 cites·15 claims
- 2781US7069741B2Economizer chamber for minimizing pressure pulsationsCARRIER CORP·Filed 2005·Granted Jul 4, 2006·6 cites·9 claims
- 2881US6237353B1System for removing parasitic losses in a refrigeration unitCARRIER CORP·Filed 1999·Granted May 29, 2001·47 cites·16 claims
- 2978US11499569B2Mixed-flow compressor with counter-rotating diffuserCARRIER CORP·Filed 2020·Granted Nov 15, 2022·1 cites·18 claims
- 3077US11231214B2Low pressure integrated purgeCARRIER CORP·Filed 2019·Granted Jan 25, 2022·1 cites·16 claims
- 3177US6932190B2Sound jacket for noise reduction in refrigeration apparatusCARRIER CORP·Filed 2003·Granted Aug 23, 2005·25 cites·10 claims
- 3277US6814540B2Rotating vane diffuser for a centrifugal compressorCARRIER CORP·Filed 2002·Granted Nov 9, 2004·23 cites·23 claims
- 3376US11808277B2Centrifugal compressor with recirculation passageCARRIER CORP·Filed 2022·Granted Nov 7, 2023·0 cites·10 claims
- 3476US11067098B2Silencer for a centrifugal compressor assemblyCARRIER CORP·Filed 2019·Granted Jul 20, 2021·1 cites·17 claims
- 3576US9677566B2Centrifugal compressor inlet guide vane controlCARRIER CORP·Filed 2013·Granted Jun 13, 2017·3 cites·17 claims
- 3676US7635959B2VSD controlCARRIER CORP·Filed 2005·Granted Dec 22, 2009·5 cites·19 claims
- 3776US6506011B1Method for limiting split ring diffuser travelCARRIER CORP·Filed 2001·Granted Jan 14, 2003·22 cites·2 claims
- 3876US2025347446A1Economizer injection in a reciprocating compressorCARRIER CORP·Filed 2025·Application pending·0 cites
- 3973US11022351B2Liquid sensing for refrigerant-lubricated bearingsCARRIER CORP·Filed 2016·Granted Jun 1, 2021·1 cites·22 claims
- 4073US2025362060A1Water chiller thermal storageCARRIER CORP·Filed 2025·Application pending·0 cites
- 4172US11867196B2Centrifugal compressor and method of operating the sameCARRIER CORP·Filed 2022·Granted Jan 9, 2024·0 cites·3 claims
- 4272US8328532B2Compressor mufflerSISHTLA VISHNU M·Filed 2005·Granted Dec 11, 2012·5 cites·20 claims
- 4371US10962263B2Vapor compression system with refrigerant-lubricated compressorCARRIER CORP·Filed 2017·Granted Mar 30, 2021·1 cites·20 claims
- 4471US10823198B2Diffuser for a centrifugal compressor and centrifugal compressor having the sameCARRIER CORP·Filed 2017·Granted Nov 3, 2020·2 cites·14 claims
- 4571US9080797B2Variable speed compressorSISHTLA VISHNU M·Filed 2010·Granted Jul 14, 2015·3 cites·16 claims
- 4671US5515694ASubcooler level control for a turbine expansion refrigeration cycleCARRIER CORP·Filed 1995·Granted May 14, 1996·37 cites·6 claims
- 4769US12209777B2Magnetic bearing compressor protectionCARRIER CORP·Filed 2021·Granted Jan 28, 2025·0 cites·10 claims
- 4868US11187249B2Silencer, and centrifugal compressor and refrigeration system having the sameCARRIER CORP·Filed 2017·Granted Nov 30, 2021·1 cites·22 claims
- 4968US10539352B2Compressor bearing cooling via purge unitCARRIER CORP·Filed 2014·Granted Jan 21, 2020·1 cites·15 claims
- 5067US11923746B2Magnetic bearing cooling managementCARRIER CORP·Filed 2021·Granted Mar 5, 2024·0 cites·18 claims
Showing the top 50 of 128 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →