Ground compaction machine and method for operating a ground compaction machine
US-2026063369-A1 · Mar 5, 2026 · US
the heat-exchange media both being liquids
the heat-exchange media both being liquids · 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 | F28C3/04 |
| Official title | the heat-exchange media both being liquids |
| Display label | the heat-exchange media both being liquids |
| Total patents | 31 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2016 | 1 |
| 2017 | 7 |
| 2018 | 5 |
| 2019 | 5 |
| 2020 | 4 |
| 2022 | 1 |
| 2023 | 4 |
| 2024 | 2 |
| 2025 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Thermal management system for a test-and-measurement probe
US-12332277-B1 · Jun 17, 2025 · US
Drying apparatus and system for preparing batteries
US-2024310123-A1 · Sep 19, 2024 · US
Extractor piping on outermost sidewall of immersion hood apparatus
US-11860547-B2 · Jan 2, 2024 · US
Absorption vacuum dehumidification system and method using the same
US-2023366567-A1 · Nov 16, 2023 · US
Extractor piping on outermost sidewall of immersion hood apparatus
US-2023097211-A1 · Mar 30, 2023 · US
Hydrofluorethers and methods of using same
US-2023087560-A1 · Mar 23, 2023 · US
Extractor piping on outermost sidewall of immersion hood apparatus
US-11543754-B1 · Jan 3, 2023 · US
Extractor piping on outermost sidewall of immersion hood appartus
US-2022404714-A1 · Dec 22, 2022 · US
Additively manufactured heat exchanger
US-10830540-B2 · Nov 10, 2020 · US
Heat recovery apparatus
US-10591219-B2 · Mar 17, 2020 · US
Additively Manufactured Heat Exchanger
US-2020072559-A1 · Mar 5, 2020 · US
Devices, methods, and systems for thermal management
US-10527355-B2 · Jan 7, 2020 · US
Additively manufactured heat exchanger
US-10502502-B2 · Dec 10, 2019 · US
Cooling-water circulation system
US-2019301819-A1 · Oct 3, 2019 · US
System and method to generate steam by mixing a feed water stream with a heating medium
US-10335708-B2 · Jul 2, 2019 · US
Additively Manufactured Heat Exchanger
US-2019101338-A1 · Apr 4, 2019 · US
Additively manufactured heat exchanger
US-10175003-B2 · Jan 8, 2019 · US
Devices, methods, and systems for thermal management
US-2018356156-A1 · Dec 13, 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
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F28C3/04?
- CPC F28C3/04 is the Cooperative Patent Classification code for “the heat-exchange media both being liquids.”
- How many patents are filed under CPC F28C3/04 (the heat-exchange media both being liquids)?
- Our database includes 31 publications tagged with this CPC code.
- Is patent activity under CPC F28C3/04 growing?
- Publication counts under this code: 2 in 2024 vs 1 in 2025 (latest complete years).