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Frictional Brake Element For A Friction Brake Of A Motor Vehicle, Friction Brake, And Method For Producing A Frictional Brake Element

Patent No. EP3973204 (titled "Frictional Brake Element For A Friction Brake Of A Motor Vehicle, Friction Brake, And Method For Producing A Frictional Brake Element") was filed by Breyden on May 15, 2020. The application was issued on Apr 30, 2025.

Patent Summary

A friction brake body, such as a motor vehicle brake disk, comprises a base body, preferably grey cast iron, featuring a wear protection layer and a metallic intermediate layer. The wear protection layer consists of an iron-based alloy embedded with hard material particles composed of carbides, oxides, nitrides, or borides to enhance abrasion resistance. The intermediate layer, applied via laser deposition welding, serves as an adhesion promoter and corrosion protection layer between the base body and the wear protection layer. Crucially, the thickness of this intermediate layer is at least twice the mean particle size of the hard material particles incorporated within the wear protection layer. The invention further encompasses a friction brake utilizing such a body and the associated production method.

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Patent Oppositions (5)

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
BREMBOJan 30, 2026SIGNORI
KNORR BREMSE SYSTEME FUR NUTZFAHRZEUGEJan 30, 2026PRUFER & PARTNER MBB PATENTANWALTE RECHTSANWALTE
SHW BRAKE SYSTEMSJan 30, 2026SCHWABE SANDMAIR MARX
VOLKSWAGENJan 30, 2026BECK & ROSSIG EUROPEAN PATENT ATTORNEYS
FRITZ WINTER EISENGIESSEREIJan 29, 2026COHAUSZ & FLORACK

Dossier Documents

The dossier documents provide a comprehensive record of the patent's prosecution history - including filings, correspondence, and decisions made by patent offices - and are crucial for understanding the patent's legal journey and any challenges it may have faced during examination.

  • Date

    Description

EP3973204

BREYDEN
Application Number
EP20730195A
Filing Date
May 15, 2020
Status
Granted And Under Opposition
Mar 28, 2025
Publication Date
Apr 30, 2025
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