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Expired European patentEurope

Direct esterification of propoxylated glycerin

EP 0759422 B1 · Applicant: ARCO Chemical Technology, L.P.

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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 20, 1996 and granted October 6, 1999. A European patent lasts at most 20 years from filing, so its term ended August 20, 2016.
  • 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 20, 2022.
  • 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 20, 1996
PublishedFebruary 26, 1997
GrantedOctober 6, 1999
Term endedAugust 20, 2016
Application numberEP 96306065
Classification (CPC)C07C67/08

Timeline

Timeline From EPO dates

1997199920012003200520072009201120132015Application filedAug 20, 1996PublishedFeb 26, 1997Patent grantedOct 6, 1999Term endedAug 20, 2016

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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