System and method for fuel injection in turbine section of gas turbine engine
US-12516630-B1 · Jan 6, 2026 · US
with supplementary heating of the working fluid; Control thereof (control of fuel supply therefor F02C9/26)
with supplementary heating of the working fluid; Control thereof (control of fuel supply therefor F02C9/26) · 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 | F02K3/08 |
| Official title | with supplementary heating of the working fluid; Control thereof (control of fuel supply therefor F02C9/26) |
| Display label | with supplementary heating of the working fluid; Control thereof (control of fuel supply therefor F02C9/26) |
| Total patents | 35 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 1 |
| 2017 | 1 |
| 2018 | 3 |
| 2019 | 2 |
| 2020 | 5 |
| 2021 | 3 |
| 2022 | 3 |
| 2023 | 3 |
| 2024 | 7 |
| 2025 | 2 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Fuel pump with built-in thermal bypass
US-12492662-B2 · Dec 9, 2025 · US
Fuel pump with built-in thermal bypass
US-2025270959-A1 · Aug 28, 2025 · US
Aircraft powerplant with multiple independent fuel systems
US-2024426253-A1 · Dec 26, 2024 · US
Testing secondary power system of aircraft powerplant
US-2024426708-A1 · Dec 26, 2024 · US
Turbocharged compressor
US-12163490-B2 · Dec 10, 2024 · US
Compressor module
US-12078113-B2 · Sep 3, 2024 · US
Gas turbine engines with a fuel cell assembly
US-2024093644-A1 · Mar 21, 2024 · US
Turbocharged comrpessor
US-2024077048-A1 · Mar 7, 2024 · US
Aircraft propulsion system with inter-turbine burner
US-11859539-B2 · Jan 2, 2024 · US
Turbocharged compressor
US-11852100-B2 · Dec 26, 2023 · US
Turbocharged compressor
US-2023146332-A1 · May 11, 2023 · US
Turbocharged compressor
US-11542892-B1 · Jan 3, 2023 · US
Micro-turbine generator multi-stage turbine with interstage catalytic converter
US-11512606-B1 · Nov 29, 2022 · US
Turbine engine system with heat exchanger in bypassable secondary duct
US-11492971-B2 · Nov 8, 2022 · US
Aircraft propulsion system with inter-turbine burner
US-2022243667-A1 · Aug 4, 2022 · US
Compressor module
US-2021388730-A1 · Dec 16, 2021 · US
Heating system for convergent-divergent secondary nozzle
US-10995702-B2 · May 4, 2021 · US
Turbine engine system with heat exchanger in bypassable secondary duct
US-2021071581-A1 · Mar 11, 2021 · US
Heating system for convergent-divergent secondary nozzle
US-2020378339-A9 · Dec 3, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F02K3/08?
- CPC F02K3/08 is the Cooperative Patent Classification code for “with supplementary heating of the working fluid; Control thereof (control of fuel supply therefor F02C9/26).”
- How many patents are filed under CPC F02K3/08 (with supplementary heating of the working fluid; Control thereof (control of fuel supply therefor F02C9/26))?
- Our database includes 35 publications tagged with this CPC code.
- Is patent activity under CPC F02K3/08 growing?
- Publication counts under this code: 7 in 2024 vs 2 in 2025 (latest complete years).