Inventor
Stephen A. Kujak
Inventor
Brownsville, MN, US
Overview
Patents· 27 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C09Kprimary
C09KMaterials for miscellaneous applications, not provided for elsewhere25%
F25BRefrigeration machines, plants or systems25%
Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications5%
B01DSeparation3%
B23PMetal-working not otherwise provided for3%
F04BPositive-displacement machines for liquids3%
F24FAir-conditioning3%
G01MTesting static or dynamic balance of machines or structures3%
Y02ATechnologies for adaptation to climate change3%
Y02PClimate change mitigation technologies in the production or processing of goods3%
PatentTitleYear
11,118,822Refrigerant leak detection by use of fluid additive202111,078,392Lower GWP refrigerant compositions202111,073,315Refrigeration system with purge and acid filter202111,015,100Lower GWP refrigerant compositions202111,008,493Low global warming potential refrigerants in liquid chillers202110,988,651Refrigerant additives and compositions202110,969,148System and method for detecting refrigerant contamination in an HVACR system202110,886,739Systems and methods for grid appliances202110,655,039Lower GWP refrigerant compositions202010,543,737Cascade heat transfer system202010,465,956Phobic/philic structures in refrigeration systems and liquid vapor separation in refrigeration systems201910,465,961Refrigerant leak detection by use of fluid additive201910,443,900Heat pump201910,407,602Low global warming potential refrigerants in liquid chillers201910,400,149Improving glide in refrigerant blends and/or azeotopic blends, alternatives to R123 refrigerant, and refrigerant compositions, methods, and systems thereof201910,316,233Refrigerant compositions201910,214,670Refrigerant compositions and methods of use201910,208,234Refrigerant additives and compositions201910,190,808Refrigeration system with purge and acid filter20199,944,839Refrigerant compositions20189,879,164'Refrigerant additives and compositions'20189,868,888'Refrigerant compositions'20189,556,372'Refrigerant compositions'20176,572,689'Vapor/liquid separator for an absorption chiller'20035,946,937'Dual loop triple effect absorption chiller utilizing a common evaporator circuit'19995,783,104'Absorption refrigeration compositions having germanium based compounds'19985,653,117'Absorption refrigeration compositions containing thiocyanate, and absorption refrigeration apparatus'1997Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1997–1999Patents assigned to GAS RES INST (3)· patent assignee history
1997–2021Based in Onalaska, WI, US· patent location history
2003Patents assigned to AMERICAN STANDARD INT INC (1)· patent assignee history
2017–2021Patents assigned to TRANE INT INC (21)· patent assignee history
2019–2021Based in Brownsville, MN, US· patent location history
2020Patents assigned to THERMO KING CORP (1)· patent assignee history
2020Based in Onalasaka, WI, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| TRANE INT INC | 21 | 2017–2021 |
| GAS RES INST | 3 | 1997–1999 |
| AMERICAN STANDARD INT INC | 1 | 2003 |
| THERMO KING CORP | 1 | 2020 |
Locations
| Location | Patents | Span |
|---|---|---|
| Brownsville, Minnesota, US | 13 | 2019–2021 |
| Onalaska, WI, US | 13 | 1997–2021 |
| Onalasaka, WI, US | 1 | 2020 |