IP Verse

Hot Press Forming Plated Steel Sheet Having Excellent Impact Property, Hot Press Molding Member, And Manufacturing Method Thereof

Patent No. EP3561142 (titled "Hot Press Forming Plated Steel Sheet Having Excellent Impact Property, Hot Press Molding Member, And Manufacturing Method Thereof") was filed by Posco on Dec 15, 2017. The application was issued on Feb 17, 2021.

Patent Summary

This plated steel sheet for hot press forming comprises a base steel sheet and an Al-Si plated layer. The base steel sheet consists of 0.15-0.4% C, 0.05-1.0% Si, 0.6-3.0% Mn, 0.001-0.05% P, 0.0001-0.02% S, 0.01-0.1% Al, 0.001-0.02% N, 0.001-0.01% B, 0.01-0.5% Cr, 0.01-0.05% Ti, and balance Fe, optionally including 0.01-0.5% total Mo, Nb, and V. The plated layer contains 6-12% Si, 1-4% Fe, and balance Al. In the surface layer part (0-200 µm depth), the carbon-depleted layer (carbon content $\le$ 50% of average carbon $C_0$) is $\le$ 5 µm thick. The ratio of the

UPC Cases New

Latest UPC cases involving this patent.

Case NumberFiling DatePlaintiffProceeding Type
UPC_CFI_0002509/2026Jul 10, 2026PoscoInfringement

Patent Family

Patent Family

Patent Oppositions

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
ARCELORMITTALNov 16, 2021LAVOIX

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

  • Get instant alerts for new documents

EP3561142

POSCO
Application Number
EP17883493A
Filing Date
Dec 15, 2017
Status
Granted And Under Opposition
Jan 15, 2021
Publication Date
Feb 17, 2021
External Links
Slate, Register , Google Patents