Waste oil recycling device
US-12504120-B2 · Dec 23, 2025 · US
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combined with container
combined with container · 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 | F16N31/004 |
| Official title | {combined with container} |
| Display label | combined with container |
| Total patents | 23 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 4 |
| 2017 | 2 |
| 2018 | 3 |
| 2019 | 2 |
| 2021 | 2 |
| 2022 | 3 |
| 2023 | 2 |
| 2024 | 1 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Waste oil recycling device
US-2025207725-A1 · Jun 26, 2025 · US
Device and method for emptying and monitoring fluid drained from an engine of an aircraft
US-12012230-B2 · Jun 18, 2024 · US
Grease collection arrangement for collecting waste grease from a grease lubricated rotor blade pitch bearing of a wind turbine
US-11828269-B2 · Nov 28, 2023 · US
Oil drain pan and container with vertically adjustable funnel
US-11713846-B2 · Aug 1, 2023 · US
Oil drain pan and container with vertically adjustable funnel
US-2022381399-A1 · Dec 1, 2022 · US
Engine oil receiving structure
US-2022251983-A1 · Aug 11, 2022 · US
Grease collection arrangement for collecting waste grease from a grease lubricated rotor blade pitch bearing of a wind turbine
US-2022099069-A1 · Mar 31, 2022 · US
Fluid Filter Packaging
US-2021348717-A1 · Nov 11, 2021 · US
Device and method for emptying and monitoring fluid drained from an engine of an aircraft
US-2021253274-A1 · Aug 19, 2021 · US
Lubricant container
US-10408381-B2 · Sep 10, 2019 · US
Sump tank for a gas turbine engine
US-10208637-B2 · Feb 19, 2019 · US
Lubricant Collecting Device
US-2018372271-A1 · Dec 27, 2018 · US
Lubricant container
US-2018106426-A1 · Apr 19, 2018 · US
Sump tank for a gas turbine engine
US-2018087403-A1 · Mar 29, 2018 · US
Popularity of content items
US-9652539-B2 · May 16, 2017 · US
Oil pan structure
US-9644507-B2 · May 9, 2017 · US
Fluid drain
US-9464757-B2 · Oct 11, 2016 · US
Popularity of content items
US-2016196352-A1 · Jul 7, 2016 · US
Popularity of content items
US-9317568-B2 · Apr 19, 2016 · US