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Expired European patentEurope

Polyisocyanates blocked with sterically demanding phenols

EP 1809682 B1 · Applicant: Bayer MaterialScience AG

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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 17, 2005 and granted June 2, 2010. A European patent lasts at most 20 years from filing, so its term ended September 17, 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.
FiledSeptember 17, 2005
PublishedJuly 25, 2007
GrantedJune 2, 2010
Term endedSeptember 17, 2025
Application numberEP 05783634
Classification (CPC)C09D175/04 +2 more

Timeline

Timeline From EPO dates

2006200820102012201420162018202020222024Application filedSep 17, 2005PublishedJuly 25, 2007Patent grantedJune 2, 2010Term endedSep 17, 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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