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Expired European patentEurope

Substituted tert. butanol derivatives, method for their preparation and antimycotic agents containing them

EP 0105166 B1 · Applicant: BAYER AG

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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 granted April 22, 1987. A European patent lasts at most 20 years from filing, so its term 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
PublishedApril 11, 1984
GrantedApril 22, 1987
Term endedAugust 22, 2003
Application numberEP 83108249
Classification (CPC)C07D233/56 +2 more

Timeline

Timeline From EPO dates

1984198619881990199219941996199820002002Application filedAug 22, 1983PublishedApril 11, 1984Patent grantedApril 22, 1987Term 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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