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Expired European patentEurope

Process for the production of methylene chloride

EP 0101337 B1 · Applicant: ELF ATOCHEM S.A.

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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 June 24, 1983 and granted August 21, 1985. A European patent lasts at most 20 years from filing, so its term ended June 24, 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 December 24, 2008.
  • 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.
FiledJune 24, 1983
PublishedFebruary 22, 1984
GrantedAugust 21, 1985
Term endedJune 24, 2003
Application numberEP 83401314
Classification (CPC)C07C17/10

Timeline

Timeline From EPO dates

1984198619881990199219941996199820002002Application filedJune 24, 1983PublishedFeb 22, 1984Patent grantedAug 21, 1985Term endedJune 24, 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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