Hydrostatically Driven Vehicle with a Secondary Braking or Steering Sypply
US-2020386248-A1 · Dec 10, 2020 · US
Fluid pressure supply failure
Fluid pressure supply 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 | F15B20/004 |
| Official title | {Fluid pressure supply failure} |
| Display label | Fluid pressure supply failure |
| Total patents | 130 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 7 |
| 2016 | 8 |
| 2017 | 8 |
| 2018 | 6 |
| 2019 | 19 |
| 2020 | 14 |
| 2021 | 14 |
| 2022 | 19 |
| 2023 | 8 |
| 2024 | 13 |
| 2025 | 13 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Hydraulic circuit for operating an aircraft landing gear
US-10851815-B2 · Dec 1, 2020 · US
Device for supplying ports to a machine section of a hydraulic machine arrangement
US-2020370570-A1 · Nov 26, 2020 · US
Hydraulic system and vehicle
US-2020324810-A1 · Oct 15, 2020 · US
Unload circuit
US-10801531-B2 · Oct 13, 2020 · US
Actuator control valve arrangement
US-2020255125-A1 · Aug 13, 2020 · US
Steam valve driving apparatus
US-2020256479-A1 · Aug 13, 2020 · US
Servo control, rotor and aircraft
US-10738803-B2 · Aug 11, 2020 · US
Bootstrap hydraulic reservoir
US-2020166055-A1 · May 28, 2020 · US
Hydraulic circuit for operating an aircraft landing gear
US-2020164970-A1 · May 28, 2020 · US
System and Method for Protecting a Pressure Vessel from Excessive Differential Pressure
US-2020103040-A1 · Apr 2, 2020 · US
Hydraulic systems and methods to control a member
US-10526071-B2 · Jan 7, 2020 · US
Accumulator pressure monitoring system
US-10520384-B2 · Dec 31, 2019 · US
System for implementing redundancy in hydraulic circuits and actuating multi-cycle hydraluic tools
US-2019360508-A1 · Nov 28, 2019 · US
Inadvertent actuation block valve for a small modular nuclear reactor
US-2019362861-A1 · Nov 28, 2019 · US
Actuator system for a fly-by-wire aircraft
US-2019344885-A1 · Nov 14, 2019 · US
Hydraulic Systems And Methods To Control A Member
US-2019315457-A1 · Oct 17, 2019 · US
Hydraulic System For An Aircraft
US-2019315456-A1 · Oct 17, 2019 · US
Control device for controlling a valve arrangement and method for controlling a safety arrangement comprising said control device and said valve arrangement
US-10400905-B2 · Sep 3, 2019 · US
Abnormality detection device for hydraulic circuit and abnormality detection method for hydraulic circuit
US-10400889-B2 · Sep 3, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F15B20/004?
- CPC F15B20/004 is the Cooperative Patent Classification code for “Fluid pressure supply failure.”
- How many patents are filed under CPC F15B20/004 (Fluid pressure supply failure)?
- Our database includes 130 publications tagged with this CPC code.
- Is patent activity under CPC F15B20/004 growing?
- Publication counts under this code: 13 in 2024 vs 13 in 2025 (latest complete years).