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Ai-Mg-Si Aluminium Alloy With Improved Properties

Patent No. EP2841611 (titled "Ai-Mg-Si Aluminium Alloy With Improved Properties") was filed by Norsk Hydro ASA on Apr 25, 2013. The application was issued on Apr 4, 2018.

Patent Summary

An extruded profile comprises an Al-Mg-Si aluminium alloy with a non-recrystallised grain structure, designed for vehicle front structures to improve strength, corrosion resistance, crush properties, and temperature stability. The alloy composition is defined by a coordinate region in an Mg-Si diagram bounded by points $a_1$(0.60Mg, 0.65Si), $a_2$(0.90Mg, 1.0Si), $a_3$(1.05Mg, 0.75Si), and $a_4$(0.70Mg, 0.50Si) in wt%. Additional components (wt%) include: Fe $\le$ 0.30, Cu 0.12–0.32, Mn 0.4–1.0, Cr 0.10–0.20, Zr $\le$ 0.25, Ti 0.005–0.15, and incidental impurities $\le$ 0.1 each (including Zn $\le$ 0.5), with balance Al. Mn and Cr must both be present to ensure an even distribution of dispersoid particles. The non-recrystall

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Patent Oppositions (6)

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
HAMMERER ALUMINIUM INDUSTRIES HOLDING GMBHJan 3, 2019WIRNSBERGER & LERCHBAUM PATENTANWALTE
C TEC CONSTELLIUM TECHNOLOGY CENTER CONSTELLIUM SINGENDec 21, 2018CONSTELLIUM PROPRIETE INDUSTRIELLE
FW BRKELMANN ALUMINIUMWERKDec 18, 2018GESTHUYSEN
F.W. BRÖKELMANN ALUMINIUMWERK GMBH & CO. KGDec 18, 2018GESTHUYSEN
F.W. BRÖKELMANN ALUMINIUMWERK GMBH & CO. KGDec 18, 2018GESTHUYSEN PATENTANWALTE
TRIMET ALUMINIUM SEDec 7, 2018FLACCUS

Dossier Documents

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  • Date

    Description

EP2841611

NORSK HYDRO ASA
Application Number
EP13782264A
Filing Date
Apr 25, 2013
Status
Revoked
Jul 6, 2024
Publication Date
Apr 4, 2018
External Links
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