Rolling assembly
US-2026054432-A1 · Feb 26, 2026 · US
used as an emergency power source, e.g. in case of pump failure
used as an emergency power source, e.g. in case of pump failure · 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 | F15B1/022 |
| Official title | {used as an emergency power source, e.g. in case of pump failure} |
| Display label | used as an emergency power source, e.g. in case of pump failure |
| Total patents | 53 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 8 |
| 2017 | 2 |
| 2018 | 10 |
| 2019 | 5 |
| 2020 | 7 |
| 2021 | 5 |
| 2023 | 2 |
| 2024 | 3 |
| 2025 | 4 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Rolling assembly
US-12502813-B2 · Dec 23, 2025 · US
Method for checking the state of a hydraulic accumulator
US-2025320882-A1 · Oct 16, 2025 · US
Electrohydraulic pitch-control system with a valve pump in a rotating reference frame
US-12397901-B2 · Aug 26, 2025 · US
Additional hydraulic device for a pitch system, a pitch system and wind turbine
US-2025075678-A1 · Mar 6, 2025 · US
Rolling assembly
US-2024351246-A1 · Oct 24, 2024 · US
Device for maintaining a hydraulic supply of a utility vehicle
US-12083974-B2 · Sep 10, 2024 · US
Electrohydraulic pitch-control system with a valve pump in a rotating reference frame
US-2024253771-A1 · Aug 1, 2024 · US
Device for maintaining a hydraulic supply of a utility vehicle
US-2023311796-A1 · Oct 5, 2023 · US
Pressure sensing blowout preventer control system
US-2023205239-A1 · Jun 29, 2023 · US
Hydraulic system for an aircraft
US-11072418-B2 · Jul 27, 2021 · US
System for implementing redundancy in hydraulic circuits and actuating multi-cycle hydraulic tools
US-11067106-B2 · Jul 20, 2021 · US
Transmission hydraulic control system
US-2021190203-A1 · Jun 24, 2021 · US
Apparatus for controlling a hydraulic machine
US-10962032-B2 · Mar 30, 2021 · US
Bootstrap hydraulic reservoir
US-10920795-B2 · Feb 16, 2021 · US
Steam turbine valve drive apparatus
US-10871080-B2 · Dec 22, 2020 · US
Apparatus for controlling a hydraulic machine
US-10808734-B2 · Oct 20, 2020 · US
Bootstrap hydraulic reservoir
US-2020166055-A1 · May 28, 2020 · US
Apparatus for controlling a hydraulic machine
US-2020096015-A1 · Mar 26, 2020 · US
Apparatus for controlling a hydraulic machine
US-2020018329-A1 · Jan 16, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F15B1/022?
- CPC F15B1/022 is the Cooperative Patent Classification code for “used as an emergency power source, e.g. in case of pump failure.”
- How many patents are filed under CPC F15B1/022 (used as an emergency power source, e.g. in case of pump failure)?
- Our database includes 53 publications tagged with this CPC code.
- Is patent activity under CPC F15B1/022 growing?
- Publication counts under this code: 3 in 2024 vs 4 in 2025 (latest complete years).