IP Verse

Selective Cathode For Use In Electrolytic Chlorate Process

Patent No. EP3861151 (titled "Selective Cathode For Use In Electrolytic Chlorate Process") was filed by Nouryon Chemicals on Oct 1, 2019. The application was issued on Jun 21, 2023.

Patent Summary

A process for producing alkali metal chlorate involves electrolyzing an alkali metal chloride electrolyte solution, free of added chromium, within a non-divided electrolytic cell containing at least one anode and at least one cathode. The process yields an electrolyzed solution enriched in chlorate. The cathode consists of a conductive electrode substrate, optionally coated with one or more intermediate conductive layers, and an electrocatalytic top layer applied to the substrate or intermediate layers. This top layer comprises cerium oxide and/or manganese oxide. The invention aims to eliminate the use of toxic sodium dichromate by utilizing these selective cathodes to minimize the unwanted reduction of chlorate and hypochlorite ions, thereby improving cell efficiency and product yield.

Patent Family

Patent family tree
Statuses, jurisdictions and citation links are shared on request.

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
ARKEMA FRANCEMar 21, 2024BANDPAY & GREUTER

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

EP3861151

NOURYON CHEMICALS
Application Number
EP19779899A
Filing Date
Oct 1, 2019
Status
Granted And Under Opposition
May 19, 2023
Publication Date
Jun 21, 2023
External Links
Slate, Register , Google Patents