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Expired European patentEurope

Formylation process for aromatic aldehydes

EP 0690835 B1 · Applicant: PFIZER INC.

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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 January 26, 1994 and granted August 19, 1998. A European patent lasts at most 20 years from filing, so its term ended January 26, 2014.
  • 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 July 26, 2019.
  • 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.
FiledJanuary 26, 1994
PublishedJanuary 10, 1996
GrantedAugust 19, 1998
Term endedJanuary 26, 2014
Application numberEP 94906619
Classification (CPC)C07C41/16 +2 more

Timeline

Timeline From EPO dates

1995199719992001200320052007200920112013Application filedJan 26, 1994PublishedJan 10, 1996Patent grantedAug 19, 1998Term endedJan 26, 2014

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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