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Expired European patentEurope

Process for preparing reactive polyether polyols having an ethylene oxide end block

EP 1753802 B1 · Applicant: BASF SE

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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 April 21, 2005 and granted January 23, 2008. A European patent lasts at most 20 years from filing, so its term ended April 21, 2025.
  • 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.
FiledApril 21, 2005
PublishedFebruary 21, 2007
GrantedJanuary 23, 2008
Term endedApril 21, 2025
Application numberEP 05744275
Classification (CPC)C08G65/2696 +2 more

Timeline

Timeline From EPO dates

2006200820102012201420162018202020222024Application filedApril 21, 2005PublishedFeb 21, 2007Patent grantedJan 23, 2008Term endedApril 21, 2025

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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