Fluid System
US-2018266873-A1 · Sep 20, 2018 · US
concerning lubricant level
concerning lubricant level · 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 | F01M11/12 |
| Official title | concerning lubricant level |
| Display label | concerning lubricant level |
| Total patents | 260 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 16 |
| 2016 | 19 |
| 2017 | 23 |
| 2018 | 26 |
| 2019 | 32 |
| 2020 | 37 |
| 2021 | 25 |
| 2022 | 36 |
| 2023 | 16 |
| 2024 | 15 |
| 2025 | 12 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Engine dipstick
US-2018238206-A1 · Aug 23, 2018 · US
Apparatus for determining a stabilized filling level with an antechamber and calming structure
US-9850792-B2 · Dec 26, 2017 · US
Device for measuring the filling level of a liquid
US-2017284850-A1 · Oct 5, 2017 · US
Device for measuring a fill level of a liquid
US-2017284851-A1 · Oct 5, 2017 · US
Electronic component with a component housing
US-2017283248-A1 · Oct 5, 2017 · US
Oil level detector
US-9778087-B2 · Oct 3, 2017 · US
Measuring sensor, in particular of a level of a liquid, and internal combustion engine comprising said sensor
US-2017227393-A1 · Aug 10, 2017 · US
Network device and communication control method
US-9719383-B2 · Aug 1, 2017 · US
System for maintaining an aircraft turbine engine
US-2017211412-A1 · Jul 27, 2017 · US
Inverted oil level sensor assembly
US-2017211961-A1 · Jul 27, 2017 · US
Inverted oil level sensor assembly
US-9714859-B1 · Jul 25, 2017 · US
Method of Real-Time Oil Consumption Detection
US-2017152776-A1 · Jun 1, 2017 · US
Control methodology for wireless fluid level sensor
US-9659414-B2 · May 23, 2017 · US
Small air-cooled engine assembly with dry sump lubrication system
US-2017138232-A1 · May 18, 2017 · US
Apparatuses and methods for servicing lubrication in a lower gearcase of an outboard marine engine
US-9630694-B1 · Apr 25, 2017 · US
Method and Apparatus
US-2017107873-A1 · Apr 20, 2017 · US
Dipstick assembly and method of forming the same
US-9625303-B2 · Apr 18, 2017 · US
Method for diagnosing lack of engine oil
US-9617880-B2 · Apr 11, 2017 · US
Sensing system and method
US-2017081997-A1 · Mar 23, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F01M11/12?
- CPC F01M11/12 is the Cooperative Patent Classification code for “concerning lubricant level.”
- How many patents are filed under CPC F01M11/12 (concerning lubricant level)?
- Our database includes 260 publications tagged with this CPC code.
- Is patent activity under CPC F01M11/12 growing?
- Publication counts under this code: 15 in 2024 vs 12 in 2025 (latest complete years).