Turbine engine bearing arrangement
US-11512637-B2 · Nov 29, 2022 · US
characterised by counter-rotating rotors subjected to same working fluid stream without intermediate stator blades or the like
characterised by counter-rotating rotors subjected to same working fluid stream without intermediate stator blades or the like · 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 | F01D1/24 |
| Official title | characterised by counter-rotating rotors subjected to same working fluid stream without intermediate stator blades or the like |
| Display label | characterised by counter-rotating rotors subjected to same working fluid stream without intermediate stator blades or the like |
| Total patents | 74 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 4 |
| 2017 | 3 |
| 2018 | 12 |
| 2019 | 9 |
| 2020 | 12 |
| 2021 | 9 |
| 2022 | 8 |
| 2023 | 8 |
| 2024 | 2 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Compact Compressor
US-2022268209-A1 · Aug 25, 2022 · US
Turbomachine with alternatingly spaced turbine rotor blades
US-11371379-B2 · Jun 28, 2022 · US
Turbine engine with a contra-rotating turbine for an aircraft
US-11352980-B2 · Jun 7, 2022 · US
Turbine engine bearing arrangement
US-2022145798-A1 · May 12, 2022 · US
Turbine engine with annular cavity
US-11280198-B2 · Mar 22, 2022 · US
Combustion section heat transfer system for a propulsion system
US-11143106-B2 · Oct 12, 2021 · US
Method and apparatus for cooling a portion of a counter-rotating turbine engine
US-2021301665-A1 · Sep 30, 2021 · US
Turbomachine with alternatingly spaced turbine rotor blades
US-11098592-B2 · Aug 24, 2021 · US
Outer drum rotor assembly
US-11085309-B2 · Aug 10, 2021 · US
Turbomachine comprising an alternator between two counter-rotating elements
US-11041400-B2 · Jun 22, 2021 · US
Turbomachine with alternatingly spaced rotor blades
US-11021970-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
Rotatable torque frame for gas turbine engine
US-10961850-B2 · Mar 30, 2021 · US
Turbine engine with interlocking seal
US-2021087939-A1 · Mar 25, 2021 · US
Counter rotating turbine with reversing reduction gear assembly
US-10801442-B2 · Oct 13, 2020 · US
Rotor for a contrarotating turbine of a turbine engine
US-2020284150-A1 · Sep 10, 2020 · US
Turbomachine with Alternatingly Spaced Rotor Blades
US-2020263555-A1 · Aug 20, 2020 · US
Aircraft comprising a turbojet engine integrated into the rear fuselage comprising a fairing allowing the ejection of blades
US-10746044-B2 · Aug 18, 2020 · US
Turbomachine comprising an alternator between two counter-rotating elements
US-2020191010-A1 · Jun 18, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F01D1/24?
- CPC F01D1/24 is the Cooperative Patent Classification code for “characterised by counter-rotating rotors subjected to same working fluid stream without intermediate stator blades or the like.”
- How many patents are filed under CPC F01D1/24 (characterised by counter-rotating rotors subjected to same working fluid stream without intermediate stator blades or the like)?
- Our database includes 74 publications tagged with this CPC code.
- Is patent activity under CPC F01D1/24 growing?
- Publication counts under this code: 2 in 2024 vs 2 in 2025 (latest complete years).