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Expired European patentEurope

Process for hydration of olefins

EP 0127486 B1 · Applicant: TOA NENRYO KOGYO KABUSHIKI KAISHA

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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 May 31, 1984 and granted July 16, 1986. A European patent lasts at most 20 years from filing, so its term ended May 31, 2004.
  • 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 1, 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.
FiledMay 31, 1984
PublishedDecember 5, 1984
GrantedJuly 16, 1986
Term endedMay 31, 2004
Application numberEP 84303676
Classification (CPC)C07C29/04

Timeline

Timeline From EPO dates

1985198719891991199319951997199920012003Application filedMay 31, 1984PublishedDec 5, 1984Patent grantedJuly 16, 1986Term endedMay 31, 2004

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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