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Expired European patentEurope

Process for purifying sucrose fatty acid esters

EP 0338464 B1 · Applicant: DAI-ICHI KOGYO SEIYAKU 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 April 15, 1989 and granted July 30, 1997. A European patent lasts at most 20 years from filing, so its term ended April 15, 2009.
  • 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 15, 2014.
  • 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 15, 1989
PublishedOctober 25, 1989
GrantedJuly 30, 1997
Term endedApril 15, 2009
Application numberEP 89106776
Classification (CPC)C07H13/06

Timeline

Timeline From EPO dates

1990199219941996199820002002200420062008Application filedApril 15, 1989PublishedOct 25, 1989Patent grantedJuly 30, 1997Term endedApril 15, 2009

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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