Method for controlling a fuel cell
US-2018366750-A1 · Dec 20, 2018 · US
applied during specific periods
applied during specific periods · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01M8/043 |
| Official title | applied during specific periods |
| Display label | applied during specific periods |
| Total patents | 345 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 13 |
| 2016 | 19 |
| 2017 | 18 |
| 2018 | 29 |
| 2019 | 32 |
| 2020 | 39 |
| 2021 | 34 |
| 2022 | 42 |
| 2023 | 55 |
| 2024 | 32 |
| 2025 | 30 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Fuel cell stack break-in procedures and break-in conditioning systems
US-10158128-B2 · Dec 18, 2018 · US
Control method for fuel cell system and fuel cell system
US-2018358636-A1 · Dec 13, 2018 · US
Fuel cell stack break-in procedures and break-in conditioning systems
US-2018261858-A1 · Sep 13, 2018 · US
Fuel cell system and hydrogen leak decision method in fuel cell system
US-2018233755-A1 · Aug 16, 2018 · US
Driving control method of fuel cell system
US-2018175416-A1 · Jun 21, 2018 · US
Activation apparatus of fuel cell stack
US-9985298-B2 · May 29, 2018 · US
Flow battery with voltage-limiting device
US-9966618-B2 · May 8, 2018 · US
Fuel cell system and air system abnormality determination method
US-9960437-B2 · May 1, 2018 · US
Industrial vehicle having a fuel cell system
US-2018097244-A1 · Apr 5, 2018 · US
Method of manufacturing fuel cell
US-9853309-B2 · Dec 26, 2017 · US
Power controlling apparatus
US-9837692-B2 · Dec 5, 2017 · US
Method of running-in operation of fuel cell
US-2017338499-A1 · Nov 23, 2017 · US
Fuel cell multifunction cathode valve
US-2017324100-A1 · Nov 9, 2017 · US
Fuel cell system
US-9806357-B2 · Oct 31, 2017 · US
Fuel cell system
US-2017309938-A1 · Oct 26, 2017 · US
Control method of flow regulating valve of oxidizing gas and flow regulation device
US-9799901-B2 · Oct 24, 2017 · US
Method for controlling startup of fuel cell vehicle
US-2017294666-A1 · Oct 12, 2017 · US
Power supply apparatus, power supply system, and power supply method
US-2017294663-A1 · Oct 12, 2017 · US
Fuel cell system and fuel cell system control method
US-9786935-B2 · Oct 10, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01M8/043?
- CPC H01M8/043 is the Cooperative Patent Classification code for “applied during specific periods.”
- How many patents are filed under CPC H01M8/043 (applied during specific periods)?
- Our database includes 345 publications tagged with this CPC code.
- Is patent activity under CPC H01M8/043 growing?
- Publication counts under this code: 32 in 2024 vs 30 in 2025 (latest complete years).