Fluid diffusion device for sealed bearing compartment drainback system
US-2021071677-A1 · Mar 11, 2021 · US
with special means for guiding the return of oil into the sump
with special means for guiding the return of oil into the sump · 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 | F01M2011/0033 |
| Official title | {with special means for guiding the return of oil into the sump} |
| Display label | with special means for guiding the return of oil into the sump |
| Total patents | 97 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 7 |
| 2017 | 12 |
| 2018 | 11 |
| 2019 | 15 |
| 2020 | 10 |
| 2021 | 10 |
| 2022 | 13 |
| 2023 | 6 |
| 2024 | 4 |
| 2025 | 3 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Power system
US-10871091-B2 · Dec 22, 2020 · US
Oil pan assembly
US-10865671-B2 · Dec 15, 2020 · US
Internal combustion engine unit
US-2020332684-A1 · Oct 22, 2020 · US
Transmission and Drive Train for a Motor Vehicle
US-2020309246-A1 · Oct 1, 2020 · US
Engine housing component
US-10718241-B2 · Jul 21, 2020 · US
Oil storing structure for internal combustion engine
US-2020149446-A1 · May 14, 2020 · US
Internal combustion engine
US-2020141294-A1 · May 7, 2020 · US
Oil supply circuit of an engine
US-10598057-B2 · Mar 24, 2020 · US
Breather device of internal combustion engine
US-10570790-B2 · Feb 25, 2020 · US
Baffle plate for oil pan
US-10526937-B2 · Jan 7, 2020 · US
Oil pan having small active volume oil reservoir and methods of using the same
US-10494964-B2 · Dec 3, 2019 · US
Bearing device and exhaust turbine turbocharger
US-10480576-B2 · Nov 19, 2019 · US
Oil tank filling system
US-2019338674-A1 · Nov 7, 2019 · US
Oil tank system
US-2019338670-A1 · Nov 7, 2019 · US
Oil Tank Filling System
US-2019338673-A1 · Nov 7, 2019 · US
Crankcase oil catcher with an aperture and seal
US-10458296-B2 · Oct 29, 2019 · US
Oil passage structure for engine
US-2019301317-A1 · Oct 3, 2019 · US
Machine lubricant additive distribution systems and methods
US-10428703-B2 · Oct 1, 2019 · US
Oil sump
US-2019264589-A1 · Aug 29, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F01M2011/0033?
- CPC F01M2011/0033 is the Cooperative Patent Classification code for “with special means for guiding the return of oil into the sump.”
- How many patents are filed under CPC F01M2011/0033 (with special means for guiding the return of oil into the sump)?
- Our database includes 97 publications tagged with this CPC code.
- Is patent activity under CPC F01M2011/0033 growing?
- Publication counts under this code: 4 in 2024 vs 3 in 2025 (latest complete years).