Method for operating a fuel cell system, and analysis unit for a fuel cell system
US-2023352709-A1 · Nov 2, 2023 · US
of cathode exhausts
of cathode exhausts · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01M8/0447 |
| Official title | {of cathode exhausts} |
| Display label | of cathode exhausts |
| Total patents | 89 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 8 |
| 2016 | 4 |
| 2017 | 6 |
| 2018 | 2 |
| 2019 | 5 |
| 2020 | 8 |
| 2021 | 9 |
| 2022 | 6 |
| 2023 | 18 |
| 2024 | 11 |
| 2025 | 12 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Device for determining the hydrogen concentration of an exhaust gas in an exhaust gas line of a fuel cell system, and fuel cell system
US-2023343975-A1 · Oct 26, 2023 · US
Method and system for examining a fuel cell by means of a cyclic voltammetric measurement
US-11791485-B2 · Oct 17, 2023 · US
Fuel cell system
US-11742499-B2 · Aug 29, 2023 · US
Reforming catalyst pattern for fuel cell operated with enhanced CO2 utilization
US-11742508-B2 · Aug 29, 2023 · US
Fuel cell vehicle and detection system for detecting hydrogen in a fuel cell vehicle
US-2023268529-A1 · Aug 24, 2023 · US
Fuel cell system and method of controlling fuel cell system
US-11721818-B2 · Aug 8, 2023 · US
Method for treating hydrogen-containing and oxygen-containing residual gases of fuel cells, and residual gas treatment system
US-11695145-B2 · Jul 4, 2023 · US
Reforming Catalyst Pattern For Fuel Cell Operated With Enhanced CO2 Utilization
US-2023197994-A1 · Jun 22, 2023 · US
Systems and methods for controlling and monitoring a fuel cell stack using cathode exhaust humidity
US-2023104149-A1 · Apr 6, 2023 · US
Method for Diagnosing at Least One Fuel Cell Stack of a Fuel Cell Device, Computer-Readable Storage Medium, and Fuel Cell Diagnostic System
US-2023015110-A1 · Jan 19, 2023 · US
System including fuel cell assembly voltage monitor
US-11545684-B2 · Jan 3, 2023 · US
Air supply system for fuel cell and method of controlling same
US-2022359898-A1 · Nov 10, 2022 · US
Method for determining the starting state of a fuel cell system
US-11489178-B2 · Nov 1, 2022 · US
Fuel cell system and method of controlling the system
US-2022302476-A1 · Sep 22, 2022 · US
Fuel cell system
US-2022285703-A1 · Sep 8, 2022 · US
Air supply system for fuel cell and method of controlling same
US-11431013-B2 · Aug 30, 2022 · US
Method and system for examining a fuel cell by means of a cyclic voltammetric measurement
US-2022263107-A1 · Aug 18, 2022 · US
Determining the mass flow of an exhaust gas constituent of a fuel cell
US-2021399320-A1 · Dec 23, 2021 · US
Air supply system for fuel cell and method of controlling same
US-2021367255-A1 · Nov 25, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01M8/0447?
- CPC H01M8/0447 is the Cooperative Patent Classification code for “of cathode exhausts.”
- How many patents are filed under CPC H01M8/0447 (of cathode exhausts)?
- Our database includes 89 publications tagged with this CPC code.
- Is patent activity under CPC H01M8/0447 growing?
- Publication counts under this code: 11 in 2024 vs 12 in 2025 (latest complete years).