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Expired European patentEurope

Process for the production of para-xylene

EP 0106342 B1 · Applicant: IDEMITSU KOSAN COMPANY LIMITED

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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 October 15, 1983 and granted August 24, 1988. A European patent lasts at most 20 years from filing, so its term ended October 15, 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 April 15, 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.
FiledOctober 15, 1983
PublishedApril 25, 1984
GrantedAugust 24, 1988
Term endedOctober 15, 2003
Application numberEP 83110310
Classification (CPC)C07C2/864 +2 more

Timeline

Timeline From EPO dates

1984198619881990199219941996199820002002Application filedOct 15, 1983PublishedApril 25, 1984Patent grantedAug 24, 1988Term endedOct 15, 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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