IP Verse

A Crankcase Ventilation System

Patent No. EP4430283 (titled "A Crankcase Ventilation System") was filed by Grimaldi on Feb 16, 2023. The application was issued on Mar 26, 2025.

Patent Summary

A crankcase ventilation system for internal combustion engines that separates oil particles from blow-by gases using a disc stack separator and a filter element. The disc stack separator, comprising a rotor with conical plates, achieves 100% filtration efficiency for particles above 0.6 microns, while the filter element provides 100% efficiency for all particle sizes. By combining these technologies, the system reduces oil particle emissions and extends the service life of the filter element by at least 25 times.

Patent Family

Patent Family

Patent Oppositions (4)

Patent oppositions filed by competitors challenge the validity of a granted patent. These oppositions are typically based on claims of prior art, lack of novelty, or non-obviousness. They are a key part of the process for determining a patent's strength and enforceability.

CompanyOpposition DateRepresentative
MANN HUMMELJan 2, 2026HKW
MERCEDES BENZ GROUPJan 2, 2026HOFSTETTER
DAIMLER TRUCKDec 18, 2025RIEGE
ALFDEXDec 17, 2025GRUNECKER PATENT

Dossier Documents

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EP4430283

GRIMALDI
Application Number
EP23706306A
Filing Date
Feb 16, 2023
Status
Granted And Under Opposition
Feb 21, 2025
Publication Date
Mar 26, 2025
External Links
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