Ion exchanger
US-2019348693-A1 · Nov 14, 2019 · US
Purification of heat exchange media
Purification of heat exchange media · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01M8/04044 |
| Official title | Purification of heat exchange media |
| Display label | Purification of heat exchange media |
| Total patents | 204 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 14 |
| 2016 | 15 |
| 2017 | 15 |
| 2018 | 14 |
| 2019 | 15 |
| 2020 | 23 |
| 2021 | 20 |
| 2022 | 24 |
| 2023 | 27 |
| 2024 | 12 |
| 2025 | 20 |
| 2026 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for managing ion filter of fuel cell vehicle
US-10367211-B2 · Jul 30, 2019 · US
Bipolar plate having half plates of varying thickness and fuel cell stack having same
US-10122024-B2 · Nov 6, 2018 · US
Cooling module for a fuel cell
US-10115980-B2 · Oct 30, 2018 · US
Fuel cell system, method of controlling fuel cell system, and fuel cell system-mounted vehicle
US-2018287171-A1 · Oct 4, 2018 · US
De-mineralizer for fuel cell and manufacturing method of same
US-10069151-B2 · Sep 4, 2018 · US
Fuel cell stack having an internal particle retention function and vehicle having such a fuel cell stack
US-2018233757-A1 · Aug 16, 2018 · US
Ion exchanger
US-2018145349-A1 · May 24, 2018 · US
Ion exchanger
US-2018117496-A1 · May 3, 2018 · US
Ion filter life perception device for fuel cell vehicle
US-9960436-B2 · May 1, 2018 · US
Ion exchanger for a cooling circuit
US-9937441-B2 · Apr 10, 2018 · US
Ion exchanger
US-2018058781-A1 · Mar 1, 2018 · US
Ion exchanger
US-2018056284-A1 · Mar 1, 2018 · US
Radiator cleaning treatment method and method for cleaning radiator
US-2018040908-A1 · Feb 8, 2018 · US
Method of controlling fuel cell system
US-2018034087-A1 · Feb 1, 2018 · US
Ion exchanger
US-2018013155-A1 · Jan 11, 2018 · US
Ion exchanger
US-2017368547-A1 · Dec 28, 2017 · US
Electrochemical cell
US-9853302-B2 · Dec 26, 2017 · US
Cooling system and method for use with a fuel cell
US-2017365865-A1 · Dec 21, 2017 · US
Cooling circuit for fuel cell
US-9837672-B2 · Dec 5, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01M8/04044?
- CPC H01M8/04044 is the Cooperative Patent Classification code for “Purification of heat exchange media.”
- How many patents are filed under CPC H01M8/04044 (Purification of heat exchange media)?
- Our database includes 204 publications tagged with this CPC code.
- Is patent activity under CPC H01M8/04044 growing?
- Publication counts under this code: 12 in 2024 vs 20 in 2025 (latest complete years).