Inventor
KUJAK STEPHEN A
US29 patents
⚠️ This page may combine multiple inventors who share the name “KUJAK STEPHEN A”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TRANE INT INC
25 patentsUS10465961B2Nov 5, 2019
Refrigerant leak detection by use of fluid additive
TRANE INT INC20 citations94
US9556372B2Jan 31, 2017
Refrigerant compositions
TRANE INT INC14 citations92
US11162720B2Nov 2, 2021
Refrigerant recovery and repurposing
TRANE INT INC5 citations82
US11118822B2Sep 14, 2021
Refrigerant leak detection by use of fluid additive
TRANE INT INC3 citations73
US11703240B2Jul 18, 2023
Retrofitting R410A HVAC products to handle flammable refrigerants
TRANE INT INC2 citations72
US11220620B2Jan 11, 2022
Lower GWP refrigerant compositions
TRANE INT INC2 citations72
US11162722B2Nov 2, 2021
Retrofitting R410A HVAC products to handle flammable refrigerants
TRANE INT INC2 citations72
US10655039B2May 19, 2020
Lower GWP refrigerant compositions
TRANE INT INC2 citations72
US10400149B2Sep 3, 2019
Improving glide in refrigerant blends and/or azeotopic blends, alternatives to R123 refrigerant, and refrigerant compositions, methods, and systems thereof
TRANE INT INC2 citations72
US9944839B2Apr 17, 2018
Refrigerant compositions
TRANE INT INC4 citations72
US9868888B2Jan 16, 2018
Refrigerant compositions
TRANE INT INC2 citations72
US11976858B2May 7, 2024
Refrigerant recovery and repurposing
TRANE INT INC2 citations71
US10443900B2Oct 15, 2019
Heat pump
TRANE INT INC6 citations71
US10886739B2Jan 5, 2021
Systems and methods for grid appliances
TRANE INT INC1 citations69
US11198805B2Dec 14, 2021
Refrigerant compositions and methods of use
TRANE INT INC0 citations62
US11078392B2Aug 3, 2021
Lower GWP refrigerant compositions
TRANE INT INC0 citations62
US11008493B2May 18, 2021
Low global warming potential refrigerants in liquid chillers
TRANE INT INC0 citations62
US11231205B2Jan 25, 2022
Using heat recovered from heat source to obtain high temperature hot water
TRANE INT INC0 citations61
US12467668B2Nov 11, 2025
Refrigerant recovery and repurposing
TRANE INT INC0 citations60
US12387281B2Aug 12, 2025
Systems and methods for grid appliances
TRANE INT INC0 citations58
US11615488B2Mar 28, 2023
Systems and methods for grid appliances
TRANE INT INC0 citations58
US11421924B2Aug 23, 2022
Heat transfer circuit with targeted additive supply
TRANE INT INC0 citations56
US10407602B2Sep 10, 2019
Low global warming potential refrigerants in liquid chillers
TRANE INT INC0 citations51
US10316233B2Jun 11, 2019
Refrigerant compositions
TRANE INT INC0 citations51
US10214670B2Feb 26, 2019
Refrigerant compositions and methods of use
TRANE INT INC0 citations51