Quieted front exhaust motor
US-12496699-B2 · Dec 16, 2025 · US
with vanes reciprocating with respect to the inner member
with vanes reciprocating with respect to the inner 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 | F01C1/344 |
| Official title | with vanes reciprocating with respect to the inner member |
| Display label | with vanes reciprocating with respect to the inner member |
| Total patents | 31 |
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 | 1 |
| 2016 | 5 |
| 2017 | 2 |
| 2018 | 3 |
| 2020 | 2 |
| 2021 | 8 |
| 2022 | 2 |
| 2023 | 2 |
| 2024 | 4 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Fluid machinery, heat exchange apparatus and operation method for fluid machinery
US-12392342-B2 · Aug 19, 2025 · US
Air motor with increased dwell at max vane extension
US-2024368992-A1 · Nov 7, 2024 · US
Quieted front exhaust motor
US-2024351180-A1 · Oct 24, 2024 · US
Fluid machinery, heat exchange apparatus and operation method for fluid machinery
US-2024318651-A1 · Sep 26, 2024 · US
Vane wearing detection
US-12049827-B2 · Jul 30, 2024 · US
Vane wearing detection
US-2023313683-A1 · Oct 5, 2023 · US
Vane drive rotary combustion engine
US-11585221-B1 · Feb 21, 2023 · US
Gas delivery augmenter with pump mechanism
US-11505327-B2 · Nov 22, 2022 · US
Slide vane, pump body assembly, compressor and air conditioner having same
US-11353024-B2 · Jun 7, 2022 · US
Pump body assembly, fluid machinery, and heat exchange device
US-11208990-B2 · Dec 28, 2021 · US
Gas delivery augmenter with pump mechanism
US-2021284347-A1 · Sep 16, 2021 · US
Slide vane, pump body assembly, compressor and air conditioner having same
US-2021239117-A1 · Aug 5, 2021 · US
Pump body assembly, fluid machinery, and heat exchange device
US-2021207590-A1 · Jul 8, 2021 · US
Pump body assembly, compressor and air conditioner
US-2021199113-A1 · Jul 1, 2021 · US
Rotary internal combustion engine with removable subchamber insert
US-11028768-B2 · Jun 8, 2021 · US
Hydraulic device comprising a sealing element
US-10975699-B2 · Apr 13, 2021 · US
Fluid machinery, heat exchange equipment, and operating method for fluid machinery
US-10941771-B2 · Mar 9, 2021 · US
Rotary internal combustion engine with removable subchamber insert
US-2020158011-A1 · May 21, 2020 · US
Rotary internal combustion engine with removable subchamber insert
US-10544732-B2 · Jan 28, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F01C1/344?
- CPC F01C1/344 is the Cooperative Patent Classification code for “with vanes reciprocating with respect to the inner member.”
- How many patents are filed under CPC F01C1/344 (with vanes reciprocating with respect to the inner member)?
- Our database includes 31 publications tagged with this CPC code.
- Is patent activity under CPC F01C1/344 growing?
- Publication counts under this code: 4 in 2024 vs 2 in 2025 (latest complete years).