Compressor and method of autonomously inspecting oil
US-10161401-B2 · Dec 25, 2018 · US
with symmetrical double wraps
with symmetrical double wraps · 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 | F04C18/0223 |
| Official title | {with symmetrical double wraps} |
| Display label | with symmetrical double wraps |
| Total patents | 150 |
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 | 15 |
| 2016 | 21 |
| 2017 | 16 |
| 2018 | 18 |
| 2019 | 22 |
| 2020 | 13 |
| 2021 | 16 |
| 2022 | 10 |
| 2023 | 10 |
| 2024 | 6 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Scroll compressor
US-10138887-B2 · Nov 27, 2018 · US
A scroll compressor having an oil discharge device
US-2018274543-A1 · Sep 27, 2018 · US
Scroll compressor including seal with axial length that is greater than radial width
US-9938975-B2 · Apr 10, 2018 · US
Electrically-driven compressor
US-2018066659-A1 · Mar 8, 2018 · US
Variable Volume Ratio Compressor
US-2018038369-A1 · Feb 8, 2018 · US
Variable Volume Ratio Compressor
US-2018038370-A1 · Feb 8, 2018 · US
Housing for a fan of a scroll compressor
US-9874212-B2 · Jan 23, 2018 · US
Scroll-type compressor
US-9803643-B2 · Oct 31, 2017 · US
Low vibration scroll compressor for aircraft application
US-9790942-B2 · Oct 17, 2017 · US
Variable volume ratio compressor
US-9790940-B2 · Oct 17, 2017 · US
Scroll compressor and method for assembling a scroll compressor
US-9752578-B2 · Sep 5, 2017 · US
Scroll compressor having a back pressure chamber assembly disposed on a fixed scroll plate and an elastic member disposed between a floating plate and a discharge cover
US-9732752-B2 · Aug 15, 2017 · US
Thermal and sound optimized lattice-cored additive manufactured compressor components
US-2017184108-A1 · Jun 29, 2017 · US
Scroll compressor
US-9657738-B2 · May 23, 2017 · US
Scroll compressor including oldham coupling having keys that are slidingly received in slots of a non-orbiting scroll and/or an orbiting scroll
US-9638036-B2 · May 2, 2017 · US
Inverter-integrated electric compressor and assembly method therefor
US-9599109-B2 · Mar 21, 2017 · US
A scroll compressor
US-2017074267-A1 · Mar 16, 2017 · US
Hydrodynamic bearing applied on a contact interface of a fluid compressor based on a spiral type mechanism
US-9593682-B2 · Mar 14, 2017 · US
Scroll compressor
US-2017067467-A1 · Mar 9, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04C18/0223?
- CPC F04C18/0223 is the Cooperative Patent Classification code for “with symmetrical double wraps.”
- How many patents are filed under CPC F04C18/0223 (with symmetrical double wraps)?
- Our database includes 150 publications tagged with this CPC code.
- Is patent activity under CPC F04C18/0223 growing?
- Publication counts under this code: 6 in 2024 vs 3 in 2025 (latest complete years).