Sishtla; Vishnu M.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Sishtla; Vishnu M..The latest application filed is for "compressor motor including active stator cooling".
Company Profile
31.62.87
- Sishtla; Vishnu M. - Manlius NY
- Sishtla; Vishnu M. - Palm Beach Gardens FL
- Sishtla; Vishnu M. - Mailus NY
- Sishtla; Vishnu M. - Syracuse NY
- Sishtla; Vishnu M. - Manilus NY
- Sishtla; Vishnu M. - East Syracuse NY
- Sishtla; Vishnu M. - Cicero NY
- Sishtla; Vishnu M. - E. Syracuse NY
Patent Activity
| Patent | Date |
|---|---|
| Refrigeration system mixed-flow compressor Grant 11,421,708 - Cousins , et al. August 23, 2 | 2022-08-23 |
| Variable diffuser drive system Grant 11,415,148 - Deng , et al. August 16, 2 | 2022-08-16 |
| Compressor Motor Including Active Stator Cooling App 20220255373 - Sishtla; Vishnu M. ; et al. | 2022-08-11 |
| Axial And Downstream Compressor Assembly App 20220228593 - Joly; Michael M. ; et al. | 2022-07-21 |
| Centrifugal Or Mixed-flow Compressor Including Aspirated Diffuser App 20220186746 - Joly; Michael M. ; et al. | 2022-06-16 |
| Surge Protection For A Multistage Compressor App 20220186985 - Sishtla; Vishnu M. ; et al. | 2022-06-16 |
| Diffuser System And Centrifugal Compressor Comprising The Same App 20220186744 - Zhao; Hang ; et al. | 2022-06-16 |
| Rotating diffuser in centrifugal compressor Grant 11,346,366 - Joly , et al. May 31, 2 | 2022-05-31 |
| Lubrication supply system Grant 11,306,950 - Sishtla , et al. April 19, 2 | 2022-04-19 |
| Screw compressor with magnetic gear Grant 11,293,438 - Tangudu , et al. April 5, 2 | 2022-04-05 |
| Active filter for oil-free refrigerant compressor Grant 11,292,987 - Dardas , et al. April 5, 2 | 2022-04-05 |
| Mixed-flow Compressor With Counter-rotating Diffuser App 20220049717 - Joly; Michael M. ; et al. | 2022-02-17 |
| Vaneless Supersonic Diffuser For Compressor App 20220049716 - Halbe; Chaitanya Vishwajit ; et al. | 2022-02-17 |
| Low pressure integrated purge Grant 11,231,214 - Sishtla , et al. January 25, 2 | 2022-01-25 |
| Magnetic Bearing Compressor Protection App 20220011026 - Sishtla; Vishnu M. ; et al. | 2022-01-13 |
| Centrifugal Compressor With Recirculation Passage App 20220010802 - Sishtla; Vishnu M. ; et al. | 2022-01-13 |
| Foil Bearing Lubrication App 20210404720 - Sishtla; Vishnu M. ; et al. | 2021-12-30 |
| Silencer, and centrifugal compressor and refrigeration system having the same Grant 11,187,249 - Sishtla , et al. November 30, 2 | 2021-11-30 |
| Reverse Rotation Prevention In Centrifugal Compressor App 20210364209 - Sishtla; Vishnu M. ; et al. | 2021-11-25 |
| Centrifugal compressor with recirculation passage Grant 11,156,226 - Sishtla , et al. October 26, 2 | 2021-10-26 |
| Centrifugal Compressor And Method Of Operating The Same App 20210317837 - Cao; Jun ; et al. | 2021-10-14 |
| Integrated Screw Compressor Motor App 20210293236 - Sishtla; Vishnu M. ; et al. | 2021-09-23 |
| Flushing Of A Touchdown Bearing App 20210285453 - Sishtla; Vishnu M. | 2021-09-16 |
| Vapor compression system with refrigerant-lubricated compressor Grant 11,112,148 - Nieforth , et al. September 7, 2 | 2021-09-07 |
| Method And System For Compressor Operating Range Extension Via Active Valve Control App 20210270279 - Sishtla; Vishnu M. ; et al. | 2021-09-02 |
| Centrifugal Compressor Including Diffuser Pressure Equalization Feature App 20210270289 - Sishtla; Vishnu M. ; et al. | 2021-09-02 |
| Compressor With Thrust Control App 20210270275 - Sishtla; Vishnu M. | 2021-09-02 |
| High efficiency centrifugal impeller with balancing weights Grant 11,105,203 - Sishtla , et al. August 31, 2 | 2021-08-31 |
| Compressor With Vibration Sensor App 20210262478 - Sishtla; Vishnu M. | 2021-08-26 |
| Compressor Configured To Control Pressure Against Magnetic Motor Thrust Bearings App 20210254627 - Sishtla; Vishnu M. | 2021-08-19 |
| Silencer for a centrifugal compressor assembly Grant 11,067,098 - Sishtla July 20, 2 | 2021-07-20 |
| Centrifugal compressor open impeller Grant 11,053,950 - Sishtla , et al. July 6, 2 | 2021-07-06 |
| Active Filter For Oil-free Refrigerant Compressor App 20210189286 - Dardas; Zissis A. ; et al. | 2021-06-24 |
| Silencer, And Centrifugal Compressor And Refrigeration System Having The Same App 20210190093 - Sishtla; Vishnu M. ; et al. | 2021-06-24 |
| Centrifugal Compressor And Method Of Operating The Same App 20210164493 - Yu; Lei ; et al. | 2021-06-03 |
| Compressor Having Extended Range And Stability App 20210164489 - Joly; Michael M. ; et al. | 2021-06-03 |
| Variable Diffuser Drive System App 20210164494 - Deng; Kai ; et al. | 2021-06-03 |
| Liquid sensing for refrigerant-lubricated bearings Grant 11,022,351 - Sishtla , et al. June 1, 2 | 2021-06-01 |
| Mixed-flow Compressor Configuration For A Refrigeration System App 20210123444 - Joly; Michael M. ; et al. | 2021-04-29 |
| Two-stage centrifugal compressor Grant 10,968,919 - Sishtla April 6, 2 | 2021-04-06 |
| Vapor compression system with refrigerant-lubricated compressor Grant 10,962,263 - Sishtla , et al. March 30, 2 | 2021-03-30 |
| Hot gas bypass energy recovery Grant 10,941,966 - Sishtla , et al. March 9, 2 | 2021-03-09 |
| Refrigerant Lubrication System With Side Channel Pump App 20200355193 - Sishtla; Vishnu M. | 2020-11-12 |
| Seal Assembly For Compressor App 20200355194 - Sishtla; Vishnu M. | 2020-11-12 |
| Diffuser for a centrifugal compressor and centrifugal compressor having the same Grant 10,823,198 - Sishtla , et al. November 3, 2 | 2020-11-03 |
| Low-oil refrigerants and vapor compression systems Grant 10,823,467 - Jonsson , et al. November 3, 2 | 2020-11-03 |
| Hybrid bearings Grant 10,781,857 - Sishtla , et al. Sept | 2020-09-22 |
| Rotating Diffuser In Centrifugal Compressor App 20200256352 - Joly; Michael M. ; et al. | 2020-08-13 |
| Diffuser restriction ring Grant 10,690,148 - Sishtla | 2020-06-23 |
| Low capacity, low-GWP, HVAC system Grant 10,648,702 - Verma , et al. | 2020-05-12 |
| Lubrication Supply System App 20200141617 - Sishtla; Vishnu M. ; et al. | 2020-05-07 |
| Compressor motor windage loss mitigation Grant 10,612,551 - Sishtla | 2020-04-07 |
| Sealing Assembly For Centrifugal Compressor And Centrifugal Compressor Having The Same App 20200056622 - Tian; Ye ; et al. | 2020-02-20 |
| Hybrid Bearings App 20200040942 - Sishtla; Vishnu M. ; et al. | 2020-02-06 |
| Screw Compressor With Magnetic Gear App 20200040898 - Tangudu; Jagadeesh ; et al. | 2020-02-06 |
| Centrifugal compressor part load control algorithm for improved performance Grant 10,544,801 - Sishtla , et al. Ja | 2020-01-28 |
| Compressor bearing cooling via purge unit Grant 10,539,352 - Jonsson , et al. Ja | 2020-01-21 |
| Impeller Integrated Motor For Centrifugal Compressor App 20200011337 - Tangudu; Jagadeesh ; et al. | 2020-01-09 |
| Refrigerant lube system Grant 10,527,050 - Sishtla J | 2020-01-07 |
| Compressor bearing cooling Grant 10,480,831 - Jonsson , et al. Nov | 2019-11-19 |
| Two-Stage Centrifugal Compressor App 20190323515 - Sishtla; Vishnu M. | 2019-10-24 |
| Refrigeration System Mixed-flow Compressor App 20190285085 - Cousins; William T. ; et al. | 2019-09-19 |
| Centrifugal Compressor Open Impeller App 20190285081 - Sishtla; Vishnu M. ; et al. | 2019-09-19 |
| Vapor Compression System with Refrigerant-Lubricated Compressor App 20190271491 - Sishtla; Vishnu M. ; et al. | 2019-09-05 |
| Centrifugal Compressor With Recirculation Passage App 20190249681 - Sishtla; Vishnu M. ; et al. | 2019-08-15 |
| Diffuser For A Centrifugal Compressor And Centrifugal Compressor Having The Same App 20190249687 - Sishtla; Vishnu M. ; et al. | 2019-08-15 |
| Hot Gas Bypass Energy Recovery App 20190242631 - Sishtla; Vishnu M. ; et al. | 2019-08-08 |
| Silencer For A Centrifugal Compressor Assembly App 20190242408 - Sishtla; Vishnu M. | 2019-08-08 |
| High Efficiency Centrifugal Impeller App 20190234216 - Sishtla; Vishnu M. ; et al. | 2019-08-01 |
| Low Pressure Integrated Purge App 20190234661 - Sishtla; Vishnu M. ; et al. | 2019-08-01 |
| Inlet guide vane mechanism Grant 10,364,826 - Sishtla July 30, 2 | 2019-07-30 |
| Vapor Compression System with Refrigerant-Lubricated Compressor App 20190178537 - Nieforth; Scott A. ; et al. | 2019-06-13 |
| Hot gas bypass for two-stage compressor Grant 10,267,539 - Sishtla | 2019-04-23 |
| Compressor bearing cooling Grant 10,228,168 - Jonsson , et al. | 2019-03-12 |
| Compressor clearance control Grant 10,161,406 - Sishtla Dec | 2018-12-25 |
| Diffuser Restriction Ring App 20180355890 - Sishtla; Vishnu M. | 2018-12-13 |
| Low Capacity, Low-GWP, HVAC System App 20180224168 - Verma; Parmesh ; et al. | 2018-08-09 |
| Liquid Sensing for Refrigerant-Lubricated Bearings App 20180180333 - SISHTLA; Vishnu M. ; et al. | 2018-06-28 |
| Compressor surge detection Grant 9,976,565 - Sishtla May 22, 2 | 2018-05-22 |
| Low-Oil Refrigerants and Vapor Compression Systems App 20180073785 - Jonsson; Ulf J. ; et al. | 2018-03-15 |
| Low leakage seal for low pressure system Grant 9,732,997 - Sishtla August 15, 2 | 2017-08-15 |
| Hot Gas Bypass for Two-Stage Compressor App 20170176053 - Sishtla; Vishnu M. | 2017-06-22 |
| Centrifugal compressor inlet guide vane control Grant 9,677,566 - Sishtla June 13, 2 | 2017-06-13 |
| Motor rotor and air gap cooling Grant 9,657,747 - Sishtla May 23, 2 | 2017-05-23 |
| Chiller Compressor Rolling Bearings with Squeeze Film Dampers App 20170102003 - Sishtla; Vishnu M. | 2017-04-13 |
| Refrigerant Lube System App 20170097007 - Sishtla; Vishnu M. | 2017-04-06 |
| Low Leakage Seal For Low Pressure System App 20160076800 - Sishtla; Vishnu M. | 2016-03-17 |
| Compressor Bearing Cooling Via Purge Unit App 20160054040 - Jonsson; Ulf J. ; et al. | 2016-02-25 |
| Compressor Bearing Cooling App 20160047575 - JONSSON; Ulf J. ; et al. | 2016-02-18 |
| Compressor Bearing Cooling App 20160040915 - Jonsson; Ulf J. ; et al. | 2016-02-11 |
| Inlet Guide Vane Mechanism App 20150377250 - Sishtla; Vishnu M. | 2015-12-31 |
| Centrifugal Compressor Inlet Guide Vane Control App 20150275908 - Sishtla; Vishnu M. | 2015-10-01 |
| Motor Rotor And Air Gap Cooling App 20150204350 - Sishtla; Vishnu M. | 2015-07-23 |
| Variable speed compressor Grant 9,080,797 - Sishtla July 14, 2 | 2015-07-14 |
| Compressor Clearance Control App 20140216087 - Sishtla; Vishnu M. | 2014-08-07 |
| Economized Centrifugal Compressor App 20140182317 - Sishtla; Vishnu M. ; et al. | 2014-07-03 |
| Shell And Tube Heat Exchanger App 20140048237 - Esformes; Jack Leon ; et al. | 2014-02-20 |
| Compressor Windage Mitigation App 20130302184 - Sishtla; Vishnu M. | 2013-11-14 |
| Hybrid Compressor System and Methods App 20130177393 - Sishtla; Vishnu M. | 2013-07-11 |
| Compressor Surge Detection App 20130156544 - Sishtla; Vishnu M. | 2013-06-20 |
| Compressor muffler Grant 8,328,532 - Sishtla December 11, 2 | 2012-12-11 |
| Centrifugal Compressor Part Load Control Algorithm for Improved Performance App 20120219431 - Sishtla; Vishnu M. ; et al. | 2012-08-30 |
| Variable Speed Compressor App 20120201698 - Sishtla; Vishnu M. | 2012-08-09 |
| Lubrication system for touchdown bearings of a magnetic bearing compressor Grant 8,104,298 - Sishtla January 31, 2 | 2012-01-31 |
| Compressor sound suppression Grant 8,021,126 - Sishtla , et al. September 20, 2 | 2011-09-20 |
| Methods and Systems for Injecting Liquid Into a Screw Compressor for Noise Suppression App 20110016895 - Sishtla; Vishnu M. | 2011-01-27 |
| VSD control Grant 7,635,959 - Holden , et al. December 22, 2 | 2009-12-22 |
| Compressor muffler App 20090068028 - Sishtla; Vishnu M. | 2009-03-12 |
| Compressor sound suppression App 20090060759 - Sishtla; Vishnu M. ; et al. | 2009-03-05 |
| Lubrication System for Touchdown Bearings of a Magnetic Bearing Compressor App 20080245082 - Sishtla; Vishnu M. | 2008-10-09 |
| VSD Control App 20080187298 - Holden; Steven J. ; et al. | 2008-08-07 |
| Muffler for noise reduction Grant 7,100,737 - Sishtla September 5, 2 | 2006-09-05 |
| Economizer chamber for minimizing pressure pulsations Grant 7,069,741 - Sishtla July 4, 2 | 2006-07-04 |
| Sound jacket for noise reduction in refrigeration apparatus Grant 6,932,190 - Sishtla August 23, 2 | 2005-08-23 |
| Economizer chamber for minimizing pressure pulsations App 20050144976 - Sishtla, Vishnu M. | 2005-07-07 |
| Hot gas bypass isolation Grant 6,901,957 - Sishtla June 7, 2 | 2005-06-07 |
| Economizer Chamber For Minimizing Pressure Pulsations App 20050044883 - Sishtla, Vishnu M. | 2005-03-03 |
| Float valve for pulsating flow Grant 6,857,445 - Sishtla February 22, 2 | 2005-02-22 |
| Economizer chamber for minimizing pressure pulsations Grant 6,851,277 - Sishtla February 8, 2 | 2005-02-08 |
| Sound jacket for noise reduction in refrigeration apparatus App 20050022548 - Sishtla, Vishnu M. | 2005-02-03 |
| Hot gas bypass isolation App 20050022881 - Sishtla, Vishnu M. | 2005-02-03 |
| Float Valve For Pulsating Flow App 20040261845 - Sishtla, Vishnu M. | 2004-12-30 |
| Rotating vane diffuser for a centrifugal compressor Grant 6,814,540 - Sishtla , et al. November 9, 2 | 2004-11-09 |
| Rotating vane diffuser for a centrifugal compressor App 20040076513 - Sishtla, Vishnu M. ; et al. | 2004-04-22 |
| Hybrid bearing arrangement for centrifugal compressor Grant 6,632,077 - Sishtla October 14, 2 | 2003-10-14 |
| Hybrid bearing arrangement for centrifugal compressor App 20030133814 - Sishtla, Vishnu M. | 2003-07-17 |
| Rotating vane diffuser for a centrifugal compressor Grant 6,547,520 - Zinsmeyer , et al. April 15, 2 | 2003-04-15 |
| Compliant Mechanical Stop For Limiting Split Ring Diffuser Travel App 20030059296 - Sishtla, Vishnu M. | 2003-03-27 |
| Screw compressor with axial thrust balancing and motor cooling device Grant 6,506,031 - Sishtla January 14, 2 | 2003-01-14 |
| Rotating Vane Diffuser For A Centrifugal Compressor App 20020176774 - Zinsmeyer, Thomas M. ; et al. | 2002-11-28 |
| Screw compressor with axial thrust balancing and motor cooling device App 20020146332 - Sishtla, Vishnu M. | 2002-10-10 |
| Part load performance of variable speed screw compressor Grant 6,216,474 - Sishtla April 17, 2 | 2001-04-17 |
| Method and apparatus for protecting centrifugal compressors from rotating stall vibrations Grant 6,036,432 - Sishtla , et al. March 14, 2 | 2000-03-14 |
| Support mechanism of inner ring for variable pipe diffuser Grant 6,015,259 - Sishtla , et al. January 18, 2 | 2000-01-18 |
| Drive positioning mechanism for a variable pipe diffuser Grant 5,895,204 - Sishtla , et al. April 20, 1 | 1999-04-20 |
| System for reducing oil migration from a transmission Grant 5,404,964 - Zinsmeyer , et al. April 11, 1 | 1995-04-11 |
| Oil channeling in a centrifugal compressor transmission Grant 5,301,771 - Sishtla , et al. April 12, 1 | 1994-04-12 |
| Back pressure valve Grant 5,267,452 - Zinsmeyer , et al. December 7, 1 | 1993-12-07 |
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