Inertial particle separator for turbine engine
US-2021324797-A1 · Oct 21, 2021 · US
for turboprop engines
for turboprop engines · 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 | B64D2033/0293 |
| Official title | {for turboprop engines} |
| Display label | for turboprop engines |
| Total patents | 103 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 4 |
| 2017 | 9 |
| 2018 | 11 |
| 2019 | 13 |
| 2020 | 10 |
| 2021 | 13 |
| 2022 | 6 |
| 2023 | 7 |
| 2024 | 15 |
| 2025 | 11 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Ported shroud system for turboprop inlets
US-11125158-B2 · Sep 21, 2021 · US
Torque limiting device in a connection between a gearbox and a stationary structure in a gas turbine engine and a gas turbine engine
US-2021270147-A1 · Sep 2, 2021 · US
Inlet screen for aircraft engines
US-11084599-B2 · Aug 10, 2021 · US
Inlet flow structure for turboprop engine
US-11072435-B2 · Jul 27, 2021 · US
Airflow control system and methods thereof
US-2021207531-A1 · Jul 8, 2021 · US
System for changing the pitch of a turboprop engine comprising an upstream pair of contrarotating propellers
US-11052994-B2 · Jul 6, 2021 · US
Systems and methods for improved propeller design
US-11040767-B2 · Jun 22, 2021 · US
Hybrid propulsion engines for aircraft
US-10981660-B2 · Apr 20, 2021 · US
Turbomachine comprising a trap for foreign objects circulating in an air flow
US-10946975-B2 · Mar 16, 2021 · US
Pusher turboprop powerplant installation
US-2021047964-A1 · Feb 18, 2021 · US
Tiltrotor aircraft inlet-barrier filter method and apparatus
US-10829237-B2 · Nov 10, 2020 · US
Air intake for gas turbine engine
US-10794280-B2 · Oct 6, 2020 · US
Method and apparatus for an engine inlet for a ram-air system with an icing bypass
US-2020284192-A1 · Sep 10, 2020 · US
Airflow control system and methods thereof
US-2020277897-A1 · Sep 3, 2020 · US
System for changing the pitch of a turboprop engine comprising an upstream pair of contrarotating propellers
US-2020247528-A1 · Aug 6, 2020 · US
Dedicated core inflow inlet for convertible engine
US-2020231293-A1 · Jul 23, 2020 · US
Inlet flow structure for turboprop engine
US-2020130857-A1 · Apr 30, 2020 · US
Ported shroud system for turboprop inlets
US-2020088097-A1 · Mar 19, 2020 · US
Cradle for a turbopropeller engine with integrated air inlet duct
US-10562638-B2 · Feb 18, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B64D2033/0293?
- CPC B64D2033/0293 is the Cooperative Patent Classification code for “for turboprop engines.”
- How many patents are filed under CPC B64D2033/0293 (for turboprop engines)?
- Our database includes 103 publications tagged with this CPC code.
- Is patent activity under CPC B64D2033/0293 growing?
- Publication counts under this code: 15 in 2024 vs 11 in 2025 (latest complete years).