Exhaust gas diffuser with main struts and small struts
US-2017130610-A1 · May 11, 2017 · US
of blades with tandem configuration, split blades or slotted blades
of blades with tandem configuration, split blades or slotted blades · 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 | F01D5/146 |
| Official title | {of blades with tandem configuration, split blades or slotted blades} |
| Display label | of blades with tandem configuration, split blades or slotted blades |
| Total patents | 316 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 26 |
| 2016 | 33 |
| 2017 | 25 |
| 2018 | 48 |
| 2019 | 32 |
| 2020 | 48 |
| 2021 | 33 |
| 2022 | 16 |
| 2023 | 14 |
| 2024 | 19 |
| 2025 | 20 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Tandem rotor blades with cooling features
US-2016369816-A1 · Dec 22, 2016 · US
Continuous-flow machine with at least one guide vane ring
US-9506360-B2 · Nov 29, 2016 · US
Variable geometry nozzle and associated method of operation
US-9500122-B2 · Nov 22, 2016 · US
Manufacture of blade channels of turbomachine rotors
US-2016333697-A1 · Nov 17, 2016 · US
Turbomachine with variable-pitch vortex generator
US-9488064-B2 · Nov 8, 2016 · US
Gas turbine diffuser strut including coanda flow injection
US-9488191-B2 · Nov 8, 2016 · US
Web connected dual aerofoil members
US-9482095-B2 · Nov 1, 2016 · US
Airfoil with leading edge reinforcement
US-9470097-B2 · Oct 18, 2016 · US
Blade group arrangement as well as turbomachine
US-9470091-B2 · Oct 18, 2016 · US
Turbomachine
US-9453423-B2 · Sep 27, 2016 · US
Floating panel for a gas powered turbine
US-2016258307-A1 · Sep 8, 2016 · US
Turbomachine airfoil positioning
US-9435221-B2 · Sep 6, 2016 · US
Turbine rotor blade
US-2016245095-A1 · Aug 25, 2016 · US
Designing the geometry of a gas turbine exhaust diffuser on the basis of fluid dynamics information
US-2016246916-A1 · Aug 25, 2016 · US
Gas turbine engine airfoil with auxiliary flow channel
US-2016245091-A1 · Aug 25, 2016 · US
Staggered double row, slotted airfoil design for gas turbine exhaust frame
US-9422864-B2 · Aug 23, 2016 · US
Turbine engine with a turbo-compressor
US-2016237895-A1 · Aug 18, 2016 · US
Dual rotor blades having a metal leading airfoil and a trailing airfoil of a composite material for gas turbine engines
US-9410438-B2 · Aug 9, 2016 · US
Fluid-flow machine—blade with hybrid profile configuration
US-9394794-B2 · Jul 19, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F01D5/146?
- CPC F01D5/146 is the Cooperative Patent Classification code for “of blades with tandem configuration, split blades or slotted blades.”
- How many patents are filed under CPC F01D5/146 (of blades with tandem configuration, split blades or slotted blades)?
- Our database includes 316 publications tagged with this CPC code.
- Is patent activity under CPC F01D5/146 growing?
- Publication counts under this code: 19 in 2024 vs 20 in 2025 (latest complete years).