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Olefin polymerization cocatalysts derived from group-15 cationic compounds and processes using them

EP 1661900 A1 · Applicant: ExxonMobil Chemical Patents 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 December 11, 2000 and never granted as a European patent. Had it been granted, its 20-year term would have ended December 11, 2020.
  • 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 June 11, 2026.
  • 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.
FiledDecember 11, 2000
PublishedMay 31, 2006
GrantedNever granted
Term endedDecember 11, 2020
Application numberEP 05020099
Classification (CPC)C07D205/04 +2 more

Timeline

Timeline From EPO dates

2001200320052007200920112013201520172019Application filedDec 11, 2000PublishedMay 31, 2006Term endedDec 11, 2020

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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