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Expired European patentEurope

Chiral catalysts and epoxidation reactions catalyzed thereby

EP 0655950 B1 · Applicant: SMITHKLINE BEECHAM PLC

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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 5, 1993 and granted October 23, 1996. A European patent lasts at most 20 years from filing, so its term ended August 5, 2013.
  • 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 5, 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.
FiledAugust 5, 1993
PublishedJune 7, 1995
GrantedOctober 23, 1996
Term endedAugust 5, 2013
Application numberEP 94906734
Classification (CPC)C07D301/02 +2 more

Timeline

Timeline From EPO dates

1994199619982000200220042006200820102012Application filedAug 5, 1993PublishedJune 7, 1995Patent grantedOct 23, 1996Term endedAug 5, 2013

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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