Methods and apparatus for flow balancing
US-2026085794-A1 · Mar 26, 2026 · US
by maintaining residual pressure
by maintaining residual pressure · Cooperative Patent Classification (CPC)
Engines, pumps, lighting, heating, and mechanical systems.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | F17C2227/048 |
| Official title | by maintaining residual pressure |
| Display label | by maintaining residual pressure |
| Total patents | 57 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 5 |
| 2017 | 6 |
| 2018 | 2 |
| 2019 | 3 |
| 2020 | 5 |
| 2021 | 3 |
| 2022 | 6 |
| 2023 | 7 |
| 2024 | 6 |
| 2025 | 4 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for delivering liquid hydrogen
US-2026063247-A1 · Mar 5, 2026 · US
Process to capture and store methane and natural gas from producing facilities using solid sorbents
US-2026055851-A1 · Feb 26, 2026 · US
Valve with integrated pressure regulator
US-12516738-B2 · Jan 6, 2026 · US
Fluid supply and storage device, vehicle and method including such a device
US-12392451-B2 · Aug 19, 2025 · US
Medical pin index residual pressure valve
US-12311142-B2 · May 27, 2025 · US
Method of venting a pressurized hydrogen gas from a hydrogen station testing device
US-12311783-B2 · May 27, 2025 · US
Valve with integrated pressure regulator
US-12196371-B2 · Jan 14, 2025 · US
Medical pin index residual pressure valve
US-2024358991-A1 · Oct 31, 2024 · US
Apparatus and method for controlling fuel tank
US-12129967-B2 · Oct 29, 2024 · US
Container for pressurized fluid with electronic device for calculating remaining fluid
US-12078295-B2 · Sep 3, 2024 · US
Hydrogen tank assembly for a vehicle, such as an aircraft
US-12030663-B2 · Jul 9, 2024 · US
Gas filling method
US-12025279-B2 · Jul 2, 2024 · US
Hydrogen tank and method for operating a hydrogen tank
US-2024117934-A1 · Apr 11, 2024 · US
Valve with integrated pressure regulator
US-2023296177-A1 · Sep 21, 2023 · US
Gas filling method
US-2023204158-A1 · Jun 29, 2023 · US
Method of venting a pressurized hydrogen gas from a hydrogen station testing device
US-2023173925-A1 · Jun 8, 2023 · US
Gas dispensing system with tank pressure and heat management
US-11649929-B2 · May 16, 2023 · US
Valve with integrated pressure regulator
US-2023044925-A1 · Feb 9, 2023 · US
Hydrogen tank assembly for a vehicle, such as an aircraft
US-2023027471-A1 · Jan 26, 2023 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F17C2227/048?
- CPC F17C2227/048 is the Cooperative Patent Classification code for “by maintaining residual pressure.”
- How many patents are filed under CPC F17C2227/048 (by maintaining residual pressure)?
- Our database includes 57 publications tagged with this CPC code.
- Is patent activity under CPC F17C2227/048 growing?
- Publication counts under this code: 6 in 2024 vs 4 in 2025 (latest complete years).