Heated inlet of a crankcase ventilation system
US-10876445-B2 · Dec 29, 2020 · US
of positive pressure
of positive pressure · 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 | F01M13/028 |
| Official title | {of positive pressure} |
| Display label | of positive pressure |
| Total patents | 102 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 13 |
| 2016 | 15 |
| 2017 | 12 |
| 2018 | 10 |
| 2019 | 1 |
| 2020 | 13 |
| 2021 | 9 |
| 2022 | 7 |
| 2023 | 4 |
| 2024 | 7 |
| 2025 | 11 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Oil decantation system for an internal combustion engine
US-2020386131-A1 · Dec 10, 2020 · US
Abnormality assessment device of internal combustion engine
US-2020256225-A1 · Aug 13, 2020 · US
Abnormality assessment device of internal combustion engine
US-2020256276-A1 · Aug 13, 2020 · US
Heated inlet of a crankcase ventilation system
US-2020248596-A1 · Aug 6, 2020 · US
Blow-by gas purge apparatus for engine
US-10662837-B2 · May 26, 2020 · US
Blow-by gas treating device
US-2020102863-A1 · Apr 2, 2020 · US
A method for controlling the oil pressure of an oil pump in a combustion engine and an oil pressure arrangement
US-2020049034-A1 · Feb 13, 2020 · US
Bi-directional fluidic PCV valve assembly and system
US-10526939-B2 · Jan 7, 2020 · US
Restrictors using the Venturi effect
US-10513954-B2 · Dec 24, 2019 · US
System and method for reducing friction
US-10138772-B2 · Nov 27, 2018 · US
Fluid heating apparatus for engine
US-2018291778-A1 · Oct 11, 2018 · US
Bi-directional fluidic pcv valve assembly and system
US-2018274409-A1 · Sep 27, 2018 · US
Engine system and controller, control system and control method for engine system
US-10024230-B2 · Jul 17, 2018 · US
Crankcase ventilation device for vehicle
US-9995192-B2 · Jun 12, 2018 · US
Engine system and control method for engine system
US-9957905-B2 · May 1, 2018 · US
Crankcase ventilation pressure management for turbocharged engine
US-9909470-B2 · Mar 6, 2018 · US
Crankcase ventilation system having an oil jet pump with an integrated check valve
US-9890671-B2 · Feb 13, 2018 · US
Internal Combustion Engine and Method for Detecting a Leak from a Crankcase and/or a Tank Ventilation System
US-2018030937-A1 · Feb 1, 2018 · US
System and method for a compressor
US-2018003122-A1 · Jan 4, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F01M13/028?
- CPC F01M13/028 is the Cooperative Patent Classification code for “of positive pressure.”
- How many patents are filed under CPC F01M13/028 (of positive pressure)?
- Our database includes 102 publications tagged with this CPC code.
- Is patent activity under CPC F01M13/028 growing?
- Publication counts under this code: 7 in 2024 vs 11 in 2025 (latest complete years).