Heat transfer devices and methods of cooling heat sources
US-2019390911-A1 · Dec 26, 2019 · US
with change of state, e.g. absorption, evaporation, condensation (generating steam under pressure F22)
with change of state, e.g. absorption, evaporation, condensation (generating steam under pressure F22) · Cooperative Patent Classification (CPC)
Engines, pumps, lighting, heating, and mechanical systems.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | F28C3/08 |
| Official title | with change of state, e.g. absorption, evaporation, condensation (generating steam under pressure F22) |
| Display label | with change of state, e.g. absorption, evaporation, condensation (generating steam under pressure F22) |
| Total patents | 111 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 14 |
| 2016 | 10 |
| 2017 | 11 |
| 2018 | 16 |
| 2019 | 9 |
| 2020 | 16 |
| 2021 | 7 |
| 2022 | 9 |
| 2023 | 6 |
| 2024 | 6 |
| 2025 | 5 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Desuperheater and spray nozzles therefor
US-2019376684-A1 · Dec 12, 2019 · US
Contoured evaporative cooling medium
US-10495000-B2 · Dec 3, 2019 · US
Multi-cone, multi-stage spray nozzle
US-10371374-B2 · Aug 6, 2019 · US
Tetrafluoropropene compositions and uses thereof
US-2019177590-A1 · Jun 13, 2019 · US
Evaporative cooling systems and methods
US-10260418-B2 · Apr 16, 2019 · US
Slurry Droplet Melting Heat Exchange
US-2019093967-A1 · Mar 28, 2019 · US
Wickless capillary driven constrained vapor bubble heat pipes for application in display devices
US-10219409-B2 · Feb 26, 2019 · US
Tetrafluoropropene compositions and uses thereof
US-10208236-B2 · Feb 19, 2019 · US
Systems and methods for spray cooling
US-10156402-B1 · Dec 18, 2018 · US
Devices, methods, and systems for thermal management
US-2018356156-A1 · Dec 13, 2018 · US
Adiabatic refrigerant condenser controls system
US-10132577-B2 · Nov 20, 2018 · US
Humid air forming device, inspection device comprising same, and inspection method
US-2018320913-A1 · Nov 8, 2018 · US
Method and Device for Direct-Contact Heat Exchange between a Fouling Liquid and a Cooling Fluid
US-2018283809-A1 · Oct 4, 2018 · US
High efficiency thermal management system
US-10088238-B2 · Oct 2, 2018 · US
Contoured evaporative cooling medium
US-2018266322-A1 · Sep 20, 2018 · US
Evaporative cooling systems and methods
US-2018266323-A1 · Sep 20, 2018 · US
Hybrid cooler with bifurcated evaporative section
US-2018238625-A1 · Aug 23, 2018 · US
Compositions comprising 2,3,3,3-tetrafluoropropene, 1,1,2,3-tetra-chloropropene, 2-chloro-3,3,3-trifluoropropene, or 2-chloro-1,1,1,2-tetrafluoropropane
US-2018214727-A1 · Aug 2, 2018 · US
Method And Apparatus For Desublimation Prevention In A Direct Contact Heat Exchanger Having Holes With Non-Parallel Walls
US-2018202728-A1 · Jul 19, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F28C3/08?
- CPC F28C3/08 is the Cooperative Patent Classification code for “with change of state, e.g. absorption, evaporation, condensation (generating steam under pressure F22).”
- How many patents are filed under CPC F28C3/08 (with change of state, e.g. absorption, evaporation, condensation (generating steam under pressure F22))?
- Our database includes 111 publications tagged with this CPC code.
- Is patent activity under CPC F28C3/08 growing?
- Publication counts under this code: 6 in 2024 vs 5 in 2025 (latest complete years).