Air extractor
US-2023375007-A1 · Nov 23, 2023 · US
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characterised by use of centrifugal force of liquids entrained in pumps {(, e.g. by means of an auxiliary liquid; fluid ring compressors F04C19/00)}
characterised by use of centrifugal force of liquids entrained in pumps {(, e.g. by means of an auxiliary liquid; fluid ring compressors F04C19/00)} · 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 | F04D17/18 |
| Official title | characterised by use of centrifugal force of liquids entrained in pumps {(, e.g. by means of an auxiliary liquid; fluid ring compressors F04C19/00)} |
| Display label | characterised by use of centrifugal force of liquids entrained in pumps {(, e.g. by means of an auxiliary liquid; fluid ring compressors F04C19/00)} |
| Total patents | 7 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity appears to be growing based on the most recent years.
| Year | Patents |
|---|---|
| 2021 | 1 |
| 2022 | 2 |
| 2023 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Liquid blade pump
US-2023296095-A1 · Sep 21, 2023 · US
Liquid blade pump
US-2023279875-A1 · Sep 7, 2023 · US
Pump having liquid blades and an associated method of pumping
US-11719244-B2 · Aug 8, 2023 · US
A pump and a method of pumping a gas
US-2022213892-A1 · Jul 7, 2022 · US
Inlet collector for centrifugal fan and centrifugal fan
US-11371532-B1 · Jun 28, 2022 · US
A pump and a method of pumping a fluid
US-2021172440-A1 · Jun 10, 2021 · US