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Expired European patentEurope

A gas phase polymerization employing unsupported catalysts

EP 0764665 B1 · Applicant: UNION CARBIDE CHEMICALS & PLASTICS TECHNOLOGY CORPORATION

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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 September 24, 1996 and granted December 12, 2001. A European patent lasts at most 20 years from filing, so its term ended September 24, 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 March 24, 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.
FiledSeptember 24, 1996
PublishedMarch 26, 1997
GrantedDecember 12, 2001
Term endedSeptember 24, 2016
Application numberEP 96306943
Classification (CPC)C08F10/00

Timeline

Timeline From EPO dates

1997199920012003200520072009201120132015Application filedSep 24, 1996PublishedMarch 26, 1997Patent grantedDec 12, 2001Term endedSep 24, 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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