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Extraction of halogenated hydrocarbons from aqueous solutions using phosphine oxides on inert supports as the extractant

EP 0106970 A1 · Applicant: AMERICAN CYANAMID COMPANY

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Overview

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Listed from its EPO record in Patent Yard's archive of European patents past their term. Its claims, description and drawings are in the EPO PDF and on Google Patents, and the Claude kit works from them.

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Why it's free to use

  • Filed August 22, 1983 and never granted as a European patent. Had it been granted, its 20-year term would have ended August 22, 2003.
  • A supplementary protection certificate, which can extend a medicine or crop-protection patent, adds at most five and a half years, so even that would have ended by February 22, 2009.
  • We check European rights only. A US or other national patent in its family could still be in force: check its family on Espacenet or Google Patents.
FiledAugust 22, 1983
PublishedMay 2, 1984
GrantedNever granted
Term endedAugust 22, 2003
Application numberEP 83108243
Classification (CPC)C07C17/38 +2 more

Timeline

Timeline From EPO dates

1984198619881990199219941996199820002002Application filedAug 22, 1983PublishedMay 2, 1984Term endedAug 22, 2003

Sources & verification

Official EPO records

Full published documentClaims, description and drawings as a PDF.EPOEuropean Patent RegisterProcedure, status, file inspection and legal events.EPOLinked open EP data recordThe bibliographic record this page is built from.EPO

Cross-check elsewhere

Google PatentsFull text, worldwide family, citing patents and legal events.patents.google.comEspacenetNational family members and their legal status.European Patent Office

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