Aircraft cabin environmental control system and method and aircraft equipped with such control system
US-2018370636-A1 · Dec 27, 2018 · US
Automatic control of pressure
Automatic control of pressure · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B64D13/04 |
| Official title | Automatic control of pressure |
| Display label | Automatic control of pressure |
| Total patents | 196 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 15 |
| 2016 | 14 |
| 2017 | 19 |
| 2018 | 32 |
| 2019 | 29 |
| 2020 | 24 |
| 2021 | 21 |
| 2022 | 14 |
| 2023 | 8 |
| 2024 | 8 |
| 2025 | 10 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Spring sealed pneumatic servo valve
US-2018346128-A1 · Dec 6, 2018 · US
Pneumatic servo valve with adjustable metering members
US-2018346129-A1 · Dec 6, 2018 · US
Compressor tip injector
US-10145387-B2 · Dec 4, 2018 · US
High efficiency pneumatic flow control system for aircraft
US-2018312262-A1 · Nov 1, 2018 · US
Aircraft fluid control system having a pressure sensor
US-2018283284-A1 · Oct 4, 2018 · US
Gas Turbine Engine
US-2018274386-A1 · Sep 27, 2018 · US
Two mode system that provides bleed and outside air or just outside air
US-2018237144-A1 · Aug 23, 2018 · US
Advanced environmental control system in an integrated pack arrangement with one bleed/outflow heat exchanger
US-2018215474-A1 · Aug 2, 2018 · US
Advanced environmental control system in an integrated split pack arrangement with two bleed/outflow heat exchangers
US-2018215472-A1 · Aug 2, 2018 · US
Simplified engine bleed supply with low pressure environmental control system for aircraft
US-2018209339-A1 · Jul 26, 2018 · US
Airflow management in cabin of aircraft
US-2018148182-A1 · May 31, 2018 · US
Eco mode ecs logic
US-2017349290-A1 · Dec 7, 2017 · US
Mixing bleed and ram air using a dual use turbine system
US-2017341761-A1 · Nov 30, 2017 · US
Differential pressure sensor system, aircraft equipped with a differential pressure sensor system and method for operating a differential pressure sensor system
US-2017334573-A1 · Nov 23, 2017 · US
Method and system for emergency ventilating and pressurizing an aircraft cabin
US-9802709-B2 · Oct 31, 2017 · US
Thrust recovery outflow valves for use with aircraft
US-2017275012-A1 · Sep 28, 2017 · US
Aircraft air conditioning system with an electrically driven ambient air compressor and method for operating such an aircraft air conditioning system
US-2017275004-A1 · Sep 28, 2017 · US
Wireless aircraft cabin pressure control system utilizing smart pressure sensors
US-2017247112-A1 · Aug 31, 2017 · US
Cabin blower system
US-2017233080-A1 · Aug 17, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B64D13/04?
- CPC B64D13/04 is the Cooperative Patent Classification code for “Automatic control of pressure.”
- How many patents are filed under CPC B64D13/04 (Automatic control of pressure)?
- Our database includes 196 publications tagged with this CPC code.
- Is patent activity under CPC B64D13/04 growing?
- Publication counts under this code: 8 in 2024 vs 10 in 2025 (latest complete years).