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Expired European patentEurope

PROCESS FOR REMOVAL OF CATALYST RESIDUES FROM POLY-a-OLEFINS

EP 1692191 B1 · Applicant: CHEMTURA 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 29, 2004 and granted June 10, 2009. A European patent lasts at most 20 years from filing, so its term ended October 29, 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 29, 2004
PublishedAugust 23, 2006
GrantedJune 10, 2009
Term endedOctober 29, 2024
Application numberEP 04810187
Classification (CPC)C08F6/02

Timeline

Timeline From EPO dates

2005200720092011201320152017201920212023Application filedOct 29, 2004PublishedAug 23, 2006Patent grantedJune 10, 2009Term endedOct 29, 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

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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