Turboshaft gas turbine engine
US-11536153-B2 · Dec 27, 2022 · US
Working-fluid interconnection of machines or engines
Working-fluid interconnection of machines or engines · 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 | F01D13/02 |
| Official title | Working-fluid interconnection of machines or engines |
| Display label | Working-fluid interconnection of machines or engines |
| Total patents | 89 |
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 | 6 |
| 2017 | 3 |
| 2018 | 5 |
| 2019 | 5 |
| 2020 | 17 |
| 2021 | 9 |
| 2022 | 8 |
| 2023 | 8 |
| 2024 | 12 |
| 2025 | 5 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Gas turbine engine
US-11391209-B2 · Jul 19, 2022 · US
Compressor operability control for hybrid electric propulsion
US-11261751-B2 · Mar 1, 2022 · US
Method for making a twin-vaned nozzle ring assembly for a turbocharger with twin-scroll turbine housing for directing exhaust gases from each scroll onto turbine wheel in interleaved fashion
US-11248488-B2 · Feb 15, 2022 · US
Mechanically driven air vehicle thermal management device
US-2022018262-A1 · Jan 20, 2022 · US
Mechanically driven air vehicle thermal management device
US-11203949-B2 · Dec 21, 2021 · US
Combined cycle heat engine comprising a first and second gas turbine engine
US-11187150-B2 · Nov 30, 2021 · US
System and method for assembling and shipping steam turbine
US-2021317756-A1 · Oct 14, 2021 · US
Aircraft propulsion assembly comprising a thrust reverser
US-11136937-B2 · Oct 5, 2021 · US
Drive system for an aircraft
US-11092031-B2 · Aug 17, 2021 · US
Turbomachine with alternatingly spaced rotor blades
US-11021970-B2 · Jun 1, 2021 · US
Steam turbine exhaust chamber and steam turbine system
US-11022003-B2 · Jun 1, 2021 · US
Aircraft propulsion system and aircraft powered by such a propulsion system built into the rear of an aircraft fuselage
US-2021140367-A1 · May 13, 2021 · US
Compressor operability control for hybrid electric propulsion
US-2021017878-A1 · Jan 21, 2021 · US
Two Stage Turbocharger With Cooling Arrangement
US-2020392893-A1 · Dec 17, 2020 · US
Jet engine cold air cooling system
US-10815890-B2 · Oct 27, 2020 · US
Jet engine cold air cooling system
US-10808618-B2 · Oct 20, 2020 · US
Method for making a twin-vaned nozzle ring assembly for a turbocharger with twin-scroll turbine housing for directing exhaust gases from each scroll onto turbine wheel in interleaved fashion
US-2020291808-A1 · Sep 17, 2020 · US
Turbomachine with Alternatingly Spaced Rotor Blades
US-2020263555-A1 · Aug 20, 2020 · US
Environmental control system utilizing a motor assist and an enhanced compressor
US-10731501-B2 · Aug 4, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F01D13/02?
- CPC F01D13/02 is the Cooperative Patent Classification code for “Working-fluid interconnection of machines or engines.”
- How many patents are filed under CPC F01D13/02 (Working-fluid interconnection of machines or engines)?
- Our database includes 89 publications tagged with this CPC code.
- Is patent activity under CPC F01D13/02 growing?
- Publication counts under this code: 12 in 2024 vs 5 in 2025 (latest complete years).