Machine having a liquid lubrication system and a shaft
US-11692466-B2 · Jul 4, 2023 · US
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of helical or screw-type
of helical or screw-type · 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 | F04B19/12 |
| Official title | of helical or screw-type |
| Display label | of helical or screw-type |
| Total patents | 4 |
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 | 1 |
| 2020 | 2 |
| 2023 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Machine having a liquid lubrication system and a shaft
US-2020378281-A1 · Dec 3, 2020 · US
Method for preventing condensate in the oil of an oil-injected compressor and compressor in which such a method is applied
US-10550844-B2 · Feb 4, 2020 · US
Method for preventing condensate in the oil of an oil-injected compressor and compressor in which such a method is applied
US-2016327045-A1 · Nov 10, 2016 · US