Inventor
SIBIK LEE L
US22 patents
⚠️ This page may combine multiple inventors who share the name “SIBIK LEE L”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TRANE INT INC
12 patentsUS9746228B2Aug 29, 2017
Methods and systems for controlling a chiller system having a centrifugal compressor with a variable speed drive
TRANE INT INC10 citations84
US9523523B2Dec 20, 2016
System and method for managing fluid level in a HVAC system
TRANE INT INC5 citations81
US10634405B2Apr 28, 2020
Methods and systems for controlling a chiller system having a centrifugal compressor with a variable speed drive
TRANE INT INC2 citations73
US10612827B2Apr 7, 2020
Chiller capacity control apparatuses, methods, and systems
TRANE INT INC6 citations73
US9989943B2Jun 5, 2018
HVAC systems and controls
TRANE INT INC6 citations72
US9823005B2Nov 21, 2017
Methods and systems for detecting and recovering from control instability caused by impeller stall
TRANE INT INC2 citations72
US10422559B2Sep 24, 2019
Refrigerant level management in heat exchangers of an HVAC chiller
TRANE INT INC2 citations69
US9677795B2Jun 13, 2017
Refrigerant management in a HVAC system
TRANE INT INC4 citations69
US11085684B2Aug 10, 2021
System and method for unloading a multi-stage compressor
TRANE INT INC0 citations62
US9903626B2Feb 27, 2018
Fluid management in a HVAC system
TRANE INT INC0 citations49
US10619900B2Apr 14, 2020
Accumulator for charge management
TRANE INT INC0 citations41
US12410929B2Sep 9, 2025
Rapid restart chiller system
TRANE INT INC0 citations39
AMERICAN STANDARD INC
6 patentsUS6085532AJul 11, 2000
Chiller capacity control with variable chilled water flow compensation
AMERICAN STANDARD INC86 citations96
US5950443ASep 14, 1999
Compressor minimum capacity control
AMERICAN STANDARD INC89 citations95
US5809794ASep 22, 1998
Feed forward control of expansion valve
AMERICAN STANDARD INC55 citations95
US5632154AMay 27, 1997
Feed forward control of expansion valve
AMERICAN STANDARD INC64 citations95
US6050098AApr 18, 2000
Use of electronic expansion valve to maintain minimum oil flow
AMERICAN STANDARD INC70 citations94
US5419146AMay 30, 1995
Evaporator water temperature control for a chiller system
AMERICAN STANDARD INC53 citations92
AMERICAN STANDARD INT INC
3 patentsUS6276152B1Aug 21, 2001
Chiller capacity control with variable chilled water flow compensation
AMERICAN STANDARD INT INC66 citations96
US6266964B1Jul 31, 2001
Use of electronic expansion valve to maintain minimum oil flow
AMERICAN STANDARD INT INC30 citations91
US6318117B1Nov 20, 2001
Absorption chiller with counter flow generator
AMERICAN STANDARD INT INC13 citations67