Fuel cell device and method for operating a fuel cell device
US-11183698-B2 · Nov 23, 2021 · US
of auxiliary devices, e.g. batteries, capacitors
of auxiliary devices, e.g. batteries, capacitors · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01M8/04656 |
| Official title | {of auxiliary devices, e.g. batteries, capacitors} |
| Display label | of auxiliary devices, e.g. batteries, capacitors |
| Total patents | 87 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 8 |
| 2016 | 10 |
| 2017 | 11 |
| 2018 | 9 |
| 2019 | 11 |
| 2020 | 9 |
| 2021 | 6 |
| 2022 | 8 |
| 2023 | 3 |
| 2024 | 4 |
| 2025 | 7 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Fuel cell system, method of controlling fuel cell system, and fuel cell system-mounted vehicle
US-10886544-B2 · Jan 5, 2021 · US
Fuel cell response to electrical grid frequency events
US-10826093-B2 · Nov 3, 2020 · US
Method of controlling purge of fuel cell system for vehicle
US-10811709-B2 · Oct 20, 2020 · US
Portable computing device for external fuel cell control
US-10790561-B2 · Sep 29, 2020 · US
Fuel Cell System
US-10654376-B2 · May 19, 2020 · US
Fuel cell device and method for operating a fuel cell device
US-2020153005-A1 · May 14, 2020 · US
Test cell of an apparatus for characterising a cell of a fuel cell and method for producing such a test cell
US-10629929-B2 · Apr 21, 2020 · US
Fuel cell system
US-2020099070-A1 · Mar 26, 2020 · US
Fuel cell system
US-2020052313-A1 · Feb 13, 2020 · US
Fuel cell system
US-2020036018-A1 · Jan 30, 2020 · US
Fuel cell system and control method of the same
US-10497995-B2 · Dec 3, 2019 · US
Method and Control Unit for Conditioning a Fuel Cell Stack
US-2019334184-A1 · Oct 31, 2019 · US
Fuel cell response to electrical grid frequency events
US-2019305346-A1 · Oct 3, 2019 · US
Fuel cell vehicle and method for controlling fuel cell vehicle
US-10358050-B2 · Jul 23, 2019 · US
Fuel cell system
US-2019193589-A1 · Jun 27, 2019 · US
Apparatus for measuring an impedance of fuel cell and method of measuring an impedance of fuel cell
US-10290885-B2 · May 14, 2019 · US
Fuel cell system and method of control of same
US-10290883-B2 · May 14, 2019 · US
Fuel source, fuel cell system and associated method
US-10283790-B2 · May 7, 2019 · US
System and method for measuring insulation resistance of fuel cell vehicle
US-10247768-B2 · Apr 2, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01M8/04656?
- CPC H01M8/04656 is the Cooperative Patent Classification code for “of auxiliary devices, e.g. batteries, capacitors.”
- How many patents are filed under CPC H01M8/04656 (of auxiliary devices, e.g. batteries, capacitors)?
- Our database includes 87 publications tagged with this CPC code.
- Is patent activity under CPC H01M8/04656 growing?
- Publication counts under this code: 4 in 2024 vs 7 in 2025 (latest complete years).