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Expired European patentEurope

Catalyst system for improved polymerization yield

EP 0531270 B1 · Applicant: FINA TECHNOLOGY, INC.

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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 17, 1992 and granted July 24, 1996. A European patent lasts at most 20 years from filing, so its term ended August 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 February 17, 2018.
  • 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 17, 1992
PublishedMarch 10, 1993
GrantedJuly 24, 1996
Term endedAugust 17, 2012
Application numberEP 92870124
Classification (CPC)C08F10/00

Timeline

Timeline From EPO dates

1993199519971999200120032005200720092011Application filedAug 17, 1992PublishedMarch 10, 1993Patent grantedJuly 24, 1996Term endedAug 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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