Humidifier for fuel cell
US-2024063406-A1 · Feb 22, 2024 · US
by water containing exhaust gases
by water containing exhaust gases · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01M8/04141 |
| Official title | {by water containing exhaust gases} |
| Display label | by water containing exhaust gases |
| Total patents | 462 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 37 |
| 2016 | 21 |
| 2017 | 41 |
| 2018 | 32 |
| 2019 | 30 |
| 2020 | 35 |
| 2021 | 41 |
| 2022 | 42 |
| 2023 | 59 |
| 2024 | 58 |
| 2025 | 50 |
| 2026 | 16 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Membrane humidifier for fuel cell
US-2017077531-A1 · Mar 16, 2017 · US
Moisture exchanger and fuel cell arrangement comprising same
US-2016322655-A1 · Nov 3, 2016 · US
Method for controlling an operating point change of a fuel cell stack and a fuel cell system
US-2016315334-A1 · Oct 27, 2016 · US
Fuel cell system and humidification device of the same
US-9466846-B2 · Oct 11, 2016 · US
System and method for controlling dehydration of fuel cell stack
US-9461316-B2 · Oct 4, 2016 · US
Fuel cell purge line system
US-2016268614-A1 · Sep 15, 2016 · US
Fuel cell system and method for controlling fuel cell system
US-2016240904-A1 · Aug 18, 2016 · US
Method for Controlling Pressure
US-2016218383-A1 · Jul 28, 2016 · US
Integrated water separator and reactant humidifier for fuel cells
US-9401518-B1 · Jul 26, 2016 · US
Fuel cell system and method of controlling the same
US-2016190620-A1 · Jun 30, 2016 · US
Fuel cell system as well as vehicle having such a fuel cell system
US-2016190611-A1 · Jun 30, 2016 · US
GRAFTED FUNCTIONAL GROUPS ON EXPANDED TETRAFLUOROETHYLENE (ePTFE) SUPPORT FOR FUEL CELL AND WATER TRANSPORT MEMBRANES
US-2016190626-A1 · Jun 30, 2016 · US
Carbon membrane, process for the manufacture of carbon membranes and use thereof
US-2016175767-A1 · Jun 23, 2016 · US
Fuel cell system
US-9350033-B2 · May 24, 2016 · US
Method and system for cooling charge air for a fuel cell, and three-fluid charge air cooler
US-9343755-B2 · May 17, 2016 · US
Humidification apparatus for fuel cell system
US-2016079619-A1 · Mar 17, 2016 · US
Water transfer compound
US-2016079615-A1 · Mar 17, 2016 · US
Water transfer compound
US-2016056483-A1 · Feb 25, 2016 · US
Humidification device for fuel cell and fuel cell system comprising the same
US-2016036074-A1 · Feb 4, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01M8/04141?
- CPC H01M8/04141 is the Cooperative Patent Classification code for “by water containing exhaust gases.”
- How many patents are filed under CPC H01M8/04141 (by water containing exhaust gases)?
- Our database includes 462 publications tagged with this CPC code.
- Is patent activity under CPC H01M8/04141 growing?
- Publication counts under this code: 58 in 2024 vs 50 in 2025 (latest complete years).