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Expired European patentEurope

Preparation method of polymerisation catalyst for production of polyethylene with broad molecular weight distribution

EP 1713836 B1 · Applicant: HANWHA CHEMICAL 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 October 15, 2004 and granted December 24, 2014. A European patent lasts at most 20 years from filing, so its term ended October 15, 2024.
  • Supplementary protection certificates extend only medicine and crop-protection patents, and it isn't classified as either.
  • 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.
FiledOctober 15, 2004
PublishedOctober 25, 2006
GrantedDecember 24, 2014
Term endedOctober 15, 2024
Application numberEP 04793505
Classification (CPC)C08F210/16 +2 more

Timeline

Timeline From EPO dates

2005200720092011201320152017201920212023Application filedOct 15, 2004PublishedOct 25, 2006Patent grantedDec 24, 2014Term endedOct 15, 2024

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

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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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