Rotary compressor having a combined vane-roller structure including a ferrosoferric oxide film on a surface of a coupling groove of the roller
US-11555404-B2 · Jan 17, 2023 · US
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with vanes hinged to the inner member
with vanes hinged 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 | F04C18/44 |
| Official title | with vanes hinged to the inner member |
| Display label | with vanes hinged to the inner member |
| Total patents | 15 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 2 |
| 2017 | 3 |
| 2018 | 3 |
| 2019 | 2 |
| 2020 | 1 |
| 2021 | 1 |
| 2022 | 1 |
| 2023 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Electric compressor system for vehicle
US-11346345-B2 · May 31, 2022 · US
Electric compressor system for vehicle
US-2021123450-A1 · Apr 29, 2021 · US
Rotary compressor having a combined vane-roller structure
US-2020408097-A1 · Dec 31, 2020 · US
Rotary compressor having two cylinders
US-10233929-B2 · Mar 19, 2019 · US
Rotary compressor having two cylinders
US-10233930-B2 · Mar 19, 2019 · US
Fixed-rail rotor pump and fixed-rail rotor pump combined supercharging internal-combustion engine
US-10161299-B2 · Dec 25, 2018 · US
Rotary compressor having two cylinders
US-2018291899-A1 · Oct 11, 2018 · US
Vane rotary compressor having hinge receiving portions formed on an outer peripheral surface of a rotor with a plurality of vanes including a hinge portion and a blade portion
US-9903369-B2 · Feb 27, 2018 · US
Vane rotary compressor
US-9822779-B2 · Nov 21, 2017 · US
Rotary compressor having two cylinders
US-2017167487-A1 · Jun 15, 2017 · US
Compressor
US-9631621-B2 · Apr 25, 2017 · US
Vane rotary compressor
US-2016265531-A1 · Sep 15, 2016 · US
Fixed-rail rotor pump and fixed-rail rotor pump combined supercharging internal-combustion engine
US-2016153348-A1 · Jun 2, 2016 · US
Vane rotary compressor
US-2015369245-A1 · Dec 24, 2015 · US