Electrolyte tank volume rebalancing
US-2024396064-A1 · Nov 28, 2024 · US
Pressure; Flow
Pressure; Flow · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01M8/04746 |
| Official title | Pressure; Flow |
| Display label | Pressure; Flow |
| Total patents | 391 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 14 |
| 2016 | 25 |
| 2017 | 26 |
| 2018 | 27 |
| 2019 | 44 |
| 2020 | 31 |
| 2021 | 29 |
| 2022 | 41 |
| 2023 | 58 |
| 2024 | 47 |
| 2025 | 39 |
| 2026 | 10 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Device for diagnosing valve failure of fuel cell system
US-2024347748-A1 · Oct 17, 2024 · US
Fuel cell system
US-2024006638-A1 · Jan 4, 2024 · US
Fuel cell system and method of controlling the same
US-2017365868-A1 · Dec 21, 2017 · US
Fuel cell system and method for switching off a fuel cell stack
US-2017317364-A1 · Nov 2, 2017 · US
Control method of flow regulating valve of oxidizing gas and flow regulation device
US-9799901-B2 · Oct 24, 2017 · US
Fuel cell system and method for controlling the same
US-2017294665-A1 · Oct 12, 2017 · US
Fuel cell vehicle and method of mounting power module on fuel cell vehicle
US-2017267301-A1 · Sep 21, 2017 · US
System and method for maintaining and establishing operational readiness in a fuel cell backup system of a nuclear reactor system
US-9748006-B2 · Aug 29, 2017 · US
Control of an electrochemical device with integrated diagnostics, prognostics and lifetime management
US-2017237096-A1 · Aug 17, 2017 · US
Fuel cell system and fuel cell system control method
US-2017229721-A1 · Aug 10, 2017 · US
Fuel cell system
US-9728794-B2 · Aug 8, 2017 · US
Fuel cell and fuel cell system
US-2017179510-A1 · Jun 22, 2017 · US
Combined power generation system and unit, method, and program for controlling the same
US-9666888-B2 · May 30, 2017 · US
Power system for a telecommunications network
US-9627729-B2 · Apr 18, 2017 · US
Method for mitigating cell degradation due to startup and shutdown via cathode re-circulation combined with electrical shorting of stack
US-9614236-B2 · Apr 4, 2017 · US
Diagnostic device
US-2017059663-A1 · Mar 2, 2017 · US
Device and method for improving stack performance of fuel cell system
US-2017054167-A1 · Feb 23, 2017 · US
High-efficiency fuel cell system with carbon dioxide capture assembly and method
US-2017040629-A1 · Feb 9, 2017 · US
Fuel cell system and operating method thereof
US-9548503-B2 · Jan 17, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01M8/04746?
- CPC H01M8/04746 is the Cooperative Patent Classification code for “Pressure; Flow.”
- How many patents are filed under CPC H01M8/04746 (Pressure; Flow)?
- Our database includes 391 publications tagged with this CPC code.
- Is patent activity under CPC H01M8/04746 growing?
- Publication counts under this code: 47 in 2024 vs 39 in 2025 (latest complete years).