Compressor surge control
US-2019368500-A1 · Dec 5, 2019 · US
with control of working fluid flow
with control of working fluid flow · 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 | F02C9/50 |
| Official title | with control of working fluid flow |
| Display label | with control of working fluid flow |
| Total patents | 158 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 10 |
| 2016 | 11 |
| 2017 | 13 |
| 2018 | 15 |
| 2019 | 11 |
| 2020 | 18 |
| 2021 | 12 |
| 2022 | 23 |
| 2023 | 21 |
| 2024 | 14 |
| 2025 | 9 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Propulsion system for an aircraft, a nozzle for use with the propulsion system, and a method of manufacturing a propulsion system for an aircraft
US-2019360353-A1 · Nov 28, 2019 · US
Process to decouple regeneration gas compressor from regeneration gas treating
US-10478772-B2 · Nov 19, 2019 · US
Energy weapon system having a gas turbine generator with idle assist
US-10480408-B2 · Nov 19, 2019 · US
Fuel-air ratio control of gas turbine engines
US-10436122-B2 · Oct 8, 2019 · US
Optimal thrust control of an aircraft engine
US-10253725-B2 · Apr 9, 2019 · US
Method and system for operating a gas turbine engine
US-2019101063-A1 · Apr 4, 2019 · US
System and method to model power output of an engine
US-10215665-B2 · Feb 26, 2019 · US
Two-shaft gas turbine
US-10202906-B2 · Feb 12, 2019 · US
Systems and methods for virtual clearance measurement in a gas turbine
US-2019010821-A1 · Jan 10, 2019 · US
Systems and methods for optimizing stoichiometric combustion
US-10174682-B2 · Jan 8, 2019 · US
Gas turbine combustor control system for stoichiometric combustion in the presence of a diluent
US-10107495-B2 · Oct 23, 2018 · US
Controller, for use in a power plant having a liquid cooling system and an air cooling system
US-10100746-B2 · Oct 16, 2018 · US
Systems and methods for operating a combined cycle power plant
US-2018274391-A1 · Sep 27, 2018 · US
Systems and methods to improve shut-down purge flow in a gas turbine system
US-10082090-B2 · Sep 25, 2018 · US
Systems and methods to improve shut-down purge flow in a gas turbine system
US-10082089-B2 · Sep 25, 2018 · US
Energy weapon system having a gas turbine generator with idle assist
US-2018252161-A1 · Sep 6, 2018 · US
Fuel control device, combustor, gas turbine, control method, and program
US-2018223743-A1 · Aug 9, 2018 · US
System and method for improved control of a combined cycle power plant
US-10006315-B2 · Jun 26, 2018 · US
Systems and Methods to Control Performance Via Control of Compressor OLL Protection Actions
US-2018100442-A1 · Apr 12, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F02C9/50?
- CPC F02C9/50 is the Cooperative Patent Classification code for “with control of working fluid flow.”
- How many patents are filed under CPC F02C9/50 (with control of working fluid flow)?
- Our database includes 158 publications tagged with this CPC code.
- Is patent activity under CPC F02C9/50 growing?
- Publication counts under this code: 14 in 2024 vs 9 in 2025 (latest complete years).