Contra-rotating multi-layer propeller unit for multi-phase flow
US-10609910-B2 · Apr 7, 2020 · US
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by introducing a gas
by introducing a gas · 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 | F04D15/0044 |
| Official title | {by introducing a gas} |
| Display label | by introducing a gas |
| Total patents | 7 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity appears to be declining based on the most recent years.
| Year | Patents |
|---|---|
| 2016 | 3 |
| 2018 | 3 |
| 2020 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Contra-rotating multi-layer propeller unit for multi-phase flow
US-2018184626-A1 · Jul 5, 2018 · US
Performance prediction device and performance prediction method for compressor
US-9976552-B2 · May 22, 2018 · US
Centrifugal fuel pump with variable pressure control
US-9897054-B2 · Feb 20, 2018 · US
Performance prediction device and performance prediction method for compressor
US-2016312776-A1 · Oct 27, 2016 · US
Centrifugal fuel pump with variable pressure control
US-2016208759-A1 · Jul 21, 2016 · US
Axial compressor and control method thereof to stabilize fluid
US-9334869-B2 · May 10, 2016 · US