Turbo-compounded engine with exhaust duct acoustic arrangement
US-2024425192-A1 · Dec 26, 2024 · US
of internal-axis type with equidirectional movement of co-operating members at the points of engagement, or with one of the co-operating members being stationary, the inner member having more teeth or tooth-equivalents than the outer member
of internal-axis type with equidirectional movement of co-operating members at the points of engagement, or with one of the co-operating members being stationary, the inner member having more teeth or tooth-equivalents than the outer member · 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 | F04C2/22 |
| Official title | of internal-axis type with equidirectional movement of co-operating members at the points of engagement, or with one of the co-operating members being stationary, the inner member having more teeth or tooth-equivalents than the outer member |
| Display label | of internal-axis type with equidirectional movement of co-operating members at the points of engagement, or with one of the co-operating members being stationary, the inner member having more teeth or tooth-equivalents than the outer member |
| Total patents | 27 |
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 | 2 |
| 2017 | 4 |
| 2018 | 3 |
| 2019 | 3 |
| 2021 | 5 |
| 2022 | 2 |
| 2023 | 3 |
| 2024 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Fluid transfer apparatus
US-12158149-B2 · Dec 3, 2024 · US
Fluid transfer apparatus with a plurality of rotor housings arranged at different angularity with the neighboring rotor housings
US-11867179-B2 · Jan 9, 2024 · US
Rotary piston compressor and system for temperature conditioning with rotary piston compressor
US-11841019-B2 · Dec 12, 2023 · US
Pump body assembly with a piston sleeve having protrusions for limiting radial movement between the piston sleeve and the structural members
US-11639719-B2 · May 2, 2023 · US
Fluid transfer device
US-11629712-B2 · Apr 18, 2023 · US
Oil pump having housing with seal portion
US-11519406-B2 · Dec 6, 2022 · US
Fluid transfer apparatus
US-2022127997-A1 · Apr 28, 2022 · US
Fluid transfer device
US-2021372403-A1 · Dec 2, 2021 · US
Rotary piston compressor and system for temperature conditioning with rotary piston compressor
US-2021285441-A1 · Sep 16, 2021 · US
Oil pump
US-2021164469-A1 · Jun 3, 2021 · US
Pump body assembly, fluid machinery, and heat exchange device
US-2021156379-A1 · May 27, 2021 · US
Fluid transfer apparatus
US-2021123438-A1 · Apr 29, 2021 · US
Hydraulic circuit
US-2019390786-A1 · Dec 26, 2019 · US
Mud pump and vacuum gas extraction system
US-10463989-B2 · Nov 5, 2019 · US
Screw Compressor for a Utility Vehicle
US-2019309747-A1 · Oct 10, 2019 · US
Mud Pump and Vacuum Gas Extraction System
US-2018333658-A1 · Nov 22, 2018 · US
Mud pump and vacuum gas extraction system
US-10035083-B2 · Jul 31, 2018 · US
Apparatus for measuring rheological parameters and methods for its operation
US-9958367-B2 · May 1, 2018 · US
Pump for metering a liquid additive for a selective catalytic reduction device
US-9835154-B2 · Dec 5, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04C2/22?
- CPC F04C2/22 is the Cooperative Patent Classification code for “of internal-axis type with equidirectional movement of co-operating members at the points of engagement, or with one of the co-operating members being stationary, the inner member having more teeth or tooth-equivalents than the outer member.”
- How many patents are filed under CPC F04C2/22 (of internal-axis type with equidirectional movement of co-operating members at the points of engagement, or with one of the co-operating members being stationary, the inner member having more teeth or tooth-equivalents than the outer member)?
- Our database includes 27 publications tagged with this CPC code.
- Is patent activity under CPC F04C2/22 growing?
- Publication counts under this code: 3 in 2023 vs 3 in 2024 (latest complete years).