Control method for fuel cell system and fuel cell system
US-2018358636-A1 · Dec 13, 2018 · US
Voltage
Voltage · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01M8/04865 |
| Official title | {Voltage} |
| Display label | Voltage |
| Total patents | 151 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 11 |
| 2016 | 11 |
| 2017 | 19 |
| 2018 | 20 |
| 2019 | 16 |
| 2020 | 10 |
| 2021 | 13 |
| 2022 | 14 |
| 2023 | 14 |
| 2024 | 13 |
| 2025 | 8 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Fuel cell system
US-10153504-B2 · Dec 11, 2018 · US
Isolation and Voltage Regulation Circuit
US-2018323781-A1 · Nov 8, 2018 · US
Method for controlling an operating point change of a fuel cell stack and a fuel cell system
US-10122037-B2 · Nov 6, 2018 · US
Drive system and vehicle
US-10099573-B2 · Oct 16, 2018 · US
Control method and system for stop mode of fuel cell
US-2018294498-A1 · Oct 11, 2018 · US
Fuel cell system
US-2018290559-A1 · Oct 11, 2018 · US
Performance recovery of a fuel cell
US-10026981-B2 · Jul 17, 2018 · US
Method and device for observing a state of a fuel-cell electrochemical system
US-2018196108-A1 · Jul 12, 2018 · US
Method for operating redox flow battery
US-10014545-B2 · Jul 3, 2018 · US
Drive system and vehicle
US-2018162233-A1 · Jun 14, 2018 · US
Output control apparatus for fuel cell
US-9985305-B2 · May 29, 2018 · US
Systems and methods for initiating voltage recovery in a fuel cell system
US-9947950-B2 · Apr 17, 2018 · US
Fuel cell system
US-9947948-B2 · Apr 17, 2018 · US
Industrial vehicle having a fuel cell system
US-2018097244-A1 · Apr 5, 2018 · US
Fuel cell driving method, fuel cell system, and vehicle
US-2018083299-A1 · Mar 22, 2018 · US
Electric power adjustment system and control method for electric power adjustment system
US-2018054151-A1 · Feb 22, 2018 · US
Fuel cell system
US-2018019489-A1 · Jan 18, 2018 · US
System and method for controlling temperature of fuel cell stack
US-9865888-B2 · Jan 9, 2018 · US
Fuel cell system and fuel cell powered vehicle
US-9853311-B2 · Dec 26, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01M8/04865?
- CPC H01M8/04865 is the Cooperative Patent Classification code for “Voltage.”
- How many patents are filed under CPC H01M8/04865 (Voltage)?
- Our database includes 151 publications tagged with this CPC code.
- Is patent activity under CPC H01M8/04865 growing?
- Publication counts under this code: 13 in 2024 vs 8 in 2025 (latest complete years).