Rotary engine
US-11459891-B2 · Oct 4, 2022 · US
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Control systems for the circulation of the lubricant
Control systems for the circulation of the lubricant · 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 | F01C21/045 |
| Official title | {Control systems for the circulation of the lubricant} |
| Display label | Control systems for the circulation of the lubricant |
| Total patents | 9 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2016 | 1 |
| 2018 | 2 |
| 2019 | 1 |
| 2020 | 1 |
| 2021 | 3 |
| 2022 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Rotary engine lubrication system using intensifier injector
US-2021355898-A1 · Nov 18, 2021 · US
Rotary engine lubrication system using intensifier injector
US-11174732-B1 · Nov 16, 2021 · US
Rotary engine
US-2021003011-A1 · Jan 7, 2021 · US
ORC for transforming waste heat from a heat source into mechanical energy and compressor installation making use of such an ORC
US-10788203-B2 · Sep 29, 2020 · US
Thermal energy recovery device
US-10358948-B2 · Jul 23, 2019 · US
Thermal energy recovery device
US-2018274392-A1 · Sep 27, 2018 · US
Orc for transforming waste heat from a heat source into mechanical energy and compressor installation making use of such an orc
US-2018245788-A1 · Aug 30, 2018 · US
Fluid device with roll pockets alternatingly pressurized at different pressures
US-9341063-B2 · May 17, 2016 · US