SK

Stephen A. Kujak

TI Trane International: 35 patents #1 of 658Top 1%
GI Gas Research Institute: 3 patents #96 of 808Top 15%
TK Thermo King: 2 patents #179 of 483Top 40%
AS American Standard: 1 patents #96 of 202Top 50%
📍 Brownsville, MN: #1 of 5 inventorsTop 20%
🗺 Minnesota: #1,226 of 52,454 inventorsTop 3%
Overall (All Time): #75,376 of 4,157,543Top 2%
41
Patents All Time

Issued Patents All Time

Showing 1–25 of 41 patents

Patent #TitleCo-InventorsDate
12387281 Systems and methods for grid appliances Michael Sean Day, Matthew M. Corulli, Ronald Maurice Cosby, II 2025-08-12
12092378 Refrigerant management in HVAC systems Jon P. Hartfield, Harry Kenneth Ring, Michael William Groen, Ronald Maurice Cosby, II 2024-09-17
11976858 Refrigerant recovery and repurposing Dermott Crombie 2024-05-07
11976234 Refrigerant additives and compositions 2024-05-07
11703240 Retrofitting R410A HVAC products to handle flammable refrigerants William G. Hansen 2023-07-18
11635239 Refrigeration system with purge and acid filter Daoud A. Jandal, Julie Ann MAJURIN, Raymond S. Schafer, Paul Edmond Cieslinski 2023-04-25
11615488 Systems and methods for grid appliances Michael Sean Day, Matthew M. Corulli, Ronald Maurice Cosby, II 2023-03-28
11421924 Heat transfer circuit with targeted additive supply Kenneth J. Schultz, Elyse M. Sorenson, Morgan Elizabeth Herried Leehey 2022-08-23
11351842 Cascade heat transfer system Kenneth J. Schultz, Jeffrey B. Berge, Panayu Robert Srichai, Vladimir Sulc, Michal Kolda +1 more 2022-06-07
11231205 Using heat recovered from heat source to obtain high temperature hot water Ronald Maurice Cosby, II, Kenneth J. Schultz 2022-01-25
11220620 Lower GWP refrigerant compositions Kenneth J. Schultz 2022-01-11
11198805 Refrigerant compositions and methods of use Kenneth J. Schultz 2021-12-14
11162722 Retrofitting R410A HVAC products to handle flammable refrigerants William G. Hansen 2021-11-02
11162720 Refrigerant recovery and repurposing Dermott Crombie 2021-11-02
11137183 Phobic/philic structures in refrigeration systems and liquid vapor separation in refrigeration systems Ronald Maurice Cosby, II, Jay H. Johnson 2021-10-05
11118822 Refrigerant leak detection by use of fluid additive 2021-09-14
11078392 Lower GWP refrigerant compositions Kenneth J. Schultz 2021-08-03
11073315 Refrigeration system with purge and acid filter Daoud A. Jandal, Julie Ann MAJURIN, Raymond S. Schafer, Paul Edmond Cieslinski 2021-07-27
11008493 Low global warming potential refrigerants in liquid chillers Kenneth J. Schultz 2021-05-18
10988651 Refrigerant additives and compositions 2021-04-27
10969148 System and method for detecting refrigerant contamination in an HVACR system Julie Ann MAJURIN, Randal Newton, Kenneth J. Schultz 2021-04-06
10886739 Systems and methods for grid appliances Michael Sean Day, Matthew M. Corulli, Ronald Maurice Cosby, II 2021-01-05
10655039 Lower GWP refrigerant compositions Kenneth J. Schultz 2020-05-19
10543737 Cascade heat transfer system Kenneth J. Schultz, Jeffrey B. Berge, Panayu Robert Srichai, Vladimir Sulc, Michal Kolda +1 more 2020-01-28
10465961 Refrigerant leak detection by use of fluid additive 2019-11-05