Thermal energy storage system with high efficiency heater control
US-12595973-B2 · Apr 7, 2026 · US
the latent heat storage material being in direct contact with a heat-exchange medium or with another heat storage material (F28D20/003 takes precedence)
the latent heat storage material being in direct contact with a heat-exchange medium or with another heat storage material (F28D20/003 takes precedence) · 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 | F28D20/025 |
| Official title | {the latent heat storage material being in direct contact with a heat-exchange medium or with another heat storage material (F28D20/003 takes precedence)} |
| Display label | the latent heat storage material being in direct contact with a heat-exchange medium or with another heat storage material (F28D20/003 takes precedence) |
| Total patents | 60 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 1 |
| 2017 | 7 |
| 2018 | 7 |
| 2019 | 9 |
| 2020 | 9 |
| 2021 | 4 |
| 2022 | 4 |
| 2023 | 2 |
| 2024 | 3 |
| 2025 | 4 |
| 2026 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Thermal energy storage for a fireplace
US-2026022862-A1 · Jan 22, 2026 · US
Heat absorption and radiation system
US-12529528-B2 · Jan 20, 2026 · US
Heat storage device, power generator, and heat generator
US-12523433-B2 · Jan 13, 2026 · US
Thermal energy storage device and system
US-12516891-B2 · Jan 6, 2026 · US
Thermal energy storage system with high efficiency heater control
US-2025362093-A1 · Nov 27, 2025 · US
Use of phase change materials to store energy for heating applications in chemical production processes
US-2025283634-A1 · Sep 11, 2025 · US
Heat storage device, power generator, and heat generator
US-2025075984-A1 · Mar 6, 2025 · US
Heat sink with opposed elements providing temperature gradient
US-12188726-B2 · Jan 7, 2025 · US
Heat absorption and radiation system
US-2024271880-A1 · Aug 15, 2024 · US
Device and method for thermal-electrochemical energy storage and energy provision
US-11959664-B2 · Apr 16, 2024 · US
Heat sink with opposed elements providing temperature gradient
US-2024068756-A1 · Feb 29, 2024 · US
Supercooled thermal storage for high load short duration cooling
US-2023400262-A1 · Dec 14, 2023 · US
Thermal energy storage device and system
US-2023341192-A1 · Oct 26, 2023 · US
Block and unit for storing thermal energy
US-11408685-B2 · Aug 9, 2022 · US
Phase change material in substrate cavity
US-11387224-B2 · Jul 12, 2022 · US
Two-phase metallic alloys to facilitate thermal energy storage of a system on chip
US-11378346-B2 · Jul 5, 2022 · US
Multi-function thermal absorber and isolator using liquid-to-gas phase change material
US-11346615-B2 · May 31, 2022 · US
Heat sink with condensing fins and phase change material
US-11156408-B2 · Oct 26, 2021 · US
Device and method for thermal-electrochemical energy storage and energy provision
US-2021164696-A1 · Jun 3, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F28D20/025?
- CPC F28D20/025 is the Cooperative Patent Classification code for “the latent heat storage material being in direct contact with a heat-exchange medium or with another heat storage material (F28D20/003 takes precedence).”
- How many patents are filed under CPC F28D20/025 (the latent heat storage material being in direct contact with a heat-exchange medium or with another heat storage material (F28D20/003 takes precedence))?
- Our database includes 60 publications tagged with this CPC code.
- Is patent activity under CPC F28D20/025 growing?
- Publication counts under this code: 3 in 2024 vs 4 in 2025 (latest complete years).