Aircraft provided with an engine and an exhaust duct that is drained around an exhaust nozzle of the engine
US-12595072-B2 · Apr 7, 2026 · US
This page is not indexed by search engines while we improve data quality.
Drain pans
Drain pans · 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 | F16N31/002 |
| Official title | {Drain pans} |
| Display label | Drain pans |
| Total patents | 18 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2016 | 2 |
| 2018 | 3 |
| 2019 | 2 |
| 2020 | 2 |
| 2021 | 5 |
| 2022 | 1 |
| 2024 | 2 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Oil drain pan
US-2024425223-A1 · Dec 26, 2024 · US
Aircraft provided with an engine and an exhaust duct that is drained around an exhaust nozzle of the engine
US-2024109666-A1 · Apr 4, 2024 · US
Composite drain pan
US-11248743-B2 · Feb 15, 2022 · US
Sump cover assembly for generator
US-11162637-B2 · Nov 2, 2021 · US
Drain pan removable without the use of tools
US-11073324-B2 · Jul 27, 2021 · US
Sump cover assembly for generator
US-2021095817-A1 · Apr 1, 2021 · US
Residual oil drainage system and related method for replacing an oil filter of an engine
US-10934905-B2 · Mar 2, 2021 · US
Integrated wind turbine powertrain lubrication system
US-2021048005-A1 · Feb 18, 2021 · US
Composite drain pan
US-2020109816-A1 · Apr 9, 2020 · US
Oil lubrication system of transmission case
US-10550929-B2 · Feb 4, 2020 · US
Residual oil drainage system and related method for replacing an oil filter of an engine
US-2019234260-A1 · Aug 1, 2019 · US
Drain pan removable without the use of tools
US-2019078831-A1 · Mar 14, 2019 · US
Drain pan removable without the use of tools
US-10132553-B2 · Nov 20, 2018 · US
Oil lubrication system of transmission case
US-2018163846-A1 · Jun 14, 2018 · US
Drain pan removable without the use of tools
US-2018010844-A1 · Jan 11, 2018 · US
Vehicle oil pan with active noise reduction control
US-9494279-B2 · Nov 15, 2016 · US
Vehicle oil pan with active noise reduction control
US-2016109062-A1 · Apr 21, 2016 · US