High Performance Fibers Composite Sheet

Patent No. EP4234240 (titled "High Performance Fibers Composite Sheet") was filed by Avient Protective Materials on Dec 17, 2018. The application was issued on Jan 29, 2025.

Patent Summary

Composite sheet for ballistic protection comprising high tenacity polyethylene fibers and a functionalized polyethylene resin, wherein the fibers have a tenacity of at least 1.5 N/tex and the resin is a copolymer of ethylene with at least one unsaturated carboxylic acid comonomer, preferably acrylic acid or methacrylic acid, with at least 90 mol% of ethylene-derived monomeric units. The composite sheet exhibits improved bias extension shear properties, enabling the production of high-quality compression-molded ballistic articles with enhanced thermal stability and reduced manufacturing defects.

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
KOSTADIN TAHTADJIEV EOODOct 29, 2025TAHTADJIEV

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

EP4234240

AVIENT PROTECTIVE MATERIALS
Application Number
EP23174573A
Filing Date
Dec 17, 2018
Status
Granted And Under Opposition
Dec 26, 2024
Publication Date
Jan 29, 2025