Gas turbine engine transfer efficiency
US-2020400081-A1 · Dec 24, 2020 · US
with at least two independent shafts, i.e. cross-compound
with at least two independent shafts, i.e. cross-compound · 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 | F01D13/003 |
| Official title | {with at least two independent shafts, i.e. cross-compound} |
| Display label | with at least two independent shafts, i.e. cross-compound |
| Total patents | 104 |
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 | 10 |
| 2017 | 10 |
| 2018 | 10 |
| 2019 | 10 |
| 2020 | 17 |
| 2021 | 13 |
| 2022 | 9 |
| 2023 | 8 |
| 2024 | 7 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Gas turbine engine with distributed fans
US-10837359-B2 · Nov 17, 2020 · US
Turbo cluster gas turbine system and activation method thereof
US-2020355118-A1 · Nov 12, 2020 · US
Aircraft comprising a propulsion assembly including a fan on the rear of the fuselage
US-10829232-B2 · Nov 10, 2020 · US
Aircraft with a propulsion unit comprising a fan at the rear of the fuselage
US-10773813-B2 · Sep 15, 2020 · US
Air cycle machine connected to engine gearbox
US-2020277079-A1 · Sep 3, 2020 · US
Pre-start motoring synchronization for multiple engines
US-2020207482-A1 · Jul 2, 2020 · US
Power System with a Coordinated Power Draw
US-2020173300-A1 · Jun 4, 2020 · US
Hybrid electric turbine engine
US-10641124-B2 · May 5, 2020 · US
Compound engine assembly with common inlet
US-10533489-B2 · Jan 14, 2020 · US
Angled reverse core gas turbine engine with widened nozzle
US-10502085-B2 · Dec 10, 2019 · US
Hybrid electric turbine engine
US-2019368370-A1 · Dec 5, 2019 · US
Method for coupling two sub-shafts
US-10480405-B2 · Nov 19, 2019 · US
Distributed fan lubrication system
US-10436055-B2 · Oct 8, 2019 · US
Multi-stage radial turboexpander
US-2019234301-A1 · Aug 1, 2019 · US
Turbomachine train and method for coupling the turbomachine train
US-2019113085-A1 · Apr 18, 2019 · US
Rotary system
US-10227894-B2 · Mar 12, 2019 · US
Two-shaft gas turbine
US-10202906-B2 · Feb 12, 2019 · US
Decoupled gas turbine engine
US-10202856-B2 · Feb 12, 2019 · US
Method for coupling two sub-shafts
US-2019010865-A1 · Jan 10, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F01D13/003?
- CPC F01D13/003 is the Cooperative Patent Classification code for “with at least two independent shafts, i.e. cross-compound.”
- How many patents are filed under CPC F01D13/003 (with at least two independent shafts, i.e. cross-compound)?
- Our database includes 104 publications tagged with this CPC code.
- Is patent activity under CPC F01D13/003 growing?
- Publication counts under this code: 8 in 2023 vs 7 in 2024 (latest complete years).