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Expired European patentEurope

Process for producing 4-substituted gamma- lactone, and the so produced novel substances.

EP 0528044 B1 · Applicant: Fuji Flavor Co., Ltd.

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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 February 17, 1992 and granted August 13, 1997. A European patent lasts at most 20 years from filing, so its term ended February 17, 2012.
  • 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 August 17, 2017.
  • 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.
FiledFebruary 17, 1992
PublishedFebruary 24, 1993
GrantedAugust 13, 1997
Term endedFebruary 17, 2012
Application numberEP 92905003
Classification (CPC)C07D315/00 +2 more

Timeline

Timeline From EPO dates

1993199519971999200120032005200720092011Application filedFeb 17, 1992PublishedFeb 24, 1993Patent grantedAug 13, 1997Term endedFeb 17, 2012

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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