Cooling/heating method and device based on metal-organic frameworks and induced by pressure modifications
US-2024336821-A1 · Oct 10, 2024 · US
Materials undergoing a change of physical state when used (C09K5/16, C09K5/20 take precedence)
Materials undergoing a change of physical state when used (C09K5/16, C09K5/20 take precedence) · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C09K5/02 |
| Official title | Materials undergoing a change of physical state when used (C09K5/16, C09K5/20 take precedence) |
| Display label | Materials undergoing a change of physical state when used (C09K5/16, C09K5/20 take precedence) |
| Total patents | 73 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 3 |
| 2017 | 6 |
| 2018 | 10 |
| 2019 | 10 |
| 2020 | 8 |
| 2021 | 10 |
| 2022 | 8 |
| 2023 | 1 |
| 2024 | 11 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Temperature regulating nylon fiber
US-11473217-B2 · Oct 18, 2022 · US
Atomizing liquid gel with reversible phase transition characteristics, preparation method and applications thereof
US-11344058-B2 · May 31, 2022 · US
Coating material and preparation method thereof, heat exchanger and method for treating heat exchanger
US-2022145152-A1 · May 12, 2022 · US
Cooling cigarette filter and smoking product
US-2022079215-A1 · Mar 17, 2022 · US
Thermal management phase-change composition, methods of manufacture thereof, and articles containing the composition
US-2022081567-A1 · Mar 17, 2022 · US
Atomizing liquid gel with reversible phase transition characteristics, preparation method and applications thereof
US-2022039456-A1 · Feb 10, 2022 · US
Systems and cosmetic kits for removing makeup from a region of an eye
US-11234504-B2 · Feb 1, 2022 · US
Use of barocaloric materials and barocaloric devices
US-11230656-B2 · Jan 25, 2022 · US
Polymer composition and its use as a phase change material
US-11208544-B2 · Dec 28, 2021 · US
Temperature regulating nylon fiber
US-2021363664-A1 · Nov 25, 2021 · US
Spectral and angular emission control based temperature sensitive radiative cooling device
US-2021341233-A1 · Nov 4, 2021 · US
Thermal compensation layers with core-shell phase change particles and power electronics assemblies incorporating the same
US-2021302106-A1 · Sep 30, 2021 · US
Thermal interface materials including polymeric phase-change materials
US-11130845-B2 · Sep 28, 2021 · US
Thermal compensation layers with core-shell phase change particles and power electronics assemblies incorporating the same
US-11067343-B2 · Jul 20, 2021 · US
Thermal interface materials including polymeric phase-change materials
US-10968320-B2 · Apr 6, 2021 · US
Heat Exchanger System
US-2021071919-A1 · Mar 11, 2021 · US
Phase Change Materials Composite Formulations
US-2021024801-A1 · Jan 28, 2021 · US
Encapsulates
US-10894908-B2 · Jan 19, 2021 · US
Phase change materials and methods of regulating temperature
US-10703950-B2 · Jul 7, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C09K5/02?
- CPC C09K5/02 is the Cooperative Patent Classification code for “Materials undergoing a change of physical state when used (C09K5/16, C09K5/20 take precedence).”
- How many patents are filed under CPC C09K5/02 (Materials undergoing a change of physical state when used (C09K5/16, C09K5/20 take precedence))?
- Our database includes 73 publications tagged with this CPC code.
- Is patent activity under CPC C09K5/02 growing?
- Publication counts under this code: 11 in 2024 vs 2 in 2025 (latest complete years).