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Expired European patentEurope

Process for producing an optically active 2-aryl-3-acyloxy-1,2-propanediol

EP 0704419 B1 · Applicant: KANEGAFUCHI KAGAKU 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 April 17, 1995 and granted July 25, 2001. A European patent lasts at most 20 years from filing, so its term ended April 17, 2015.
  • 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 October 17, 2020.
  • 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.
FiledApril 17, 1995
PublishedApril 3, 1996
GrantedJuly 25, 2001
Term endedApril 17, 2015
Application numberEP 95915335
Classification (CPC)C07C33/26 +2 more

Timeline

Timeline From EPO dates

1996199820002002200420062008201020122014Application filedApril 17, 1995PublishedApril 3, 1996Patent grantedJuly 25, 2001Term endedApril 17, 2015

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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