IP Verse

Method For Producing Fluorinated Organic Compounds

Patent No. EP2546225 (titled "Method For Producing Fluorinated Organic Compounds") was filed by Honeywell on Jan 3, 2007. The application was issued on Dec 20, 2017.

Patent Summary

A method for producing 2,3,3,3-tetrafluoropropene (HFO-1234yf, Formula II) involves a multi-step conversion process. The method comprises converting 2-chloro-3,3,3-trifluoropropene (Formula IAA, $\text{CH}_2\text{=CClCF}_3$) into 2-chloro-1,1,1,2-tetrafluoropropane (Formula IB, $\text{CH}_3\text{CClFCF}_3$), followed by the dehydrohalogenation of Formula IB to yield Formula II ($\text{CF}_3\text{CF=CH}_2$). In a preferred embodiment, Formula IAA is first produced from a compound of Formula IA via a first catalyst in gas or liquid phase. Formula IAA is then reacted in gas or liquid phase, preferably using a second, distinct catalyst, to produce Formula IB. Finally, Formula IB is reacted in gas or liquid phase to produce HFO-1234yf.

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Patent Oppositions (3)

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
SINO RESOURCE IMP & EXPJan 16, 2019COHAUSZ & FLORACK
ZHEJIANG HUANXIN FLUORO MATERIALJan 16, 2019CARPMAELS & RANSFORD
ARKEMA FRANCESep 20, 2018ARKEMA PATENT

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

EP2546225

SEP
HONEYWELL
Application Number
EP12178209A
Filing Date
Jan 3, 2007
Status
Granted And Under Opposition
Nov 17, 2017
Publication Date
Dec 20, 2017
External Links
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