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Expired European patentEurope

Self- and diol reactive formaldehyde-free crosslinking monomers and their derived polymers

EP 0201693 B1 · Applicant: AIR PRODUCTS AND CHEMICALS, INC.

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Overview

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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 March 19, 1986 and granted November 27, 1991. A European patent lasts at most 20 years from filing, so its term ended March 19, 2006.
  • 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 September 19, 2011.
  • 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.
FiledMarch 19, 1986
PublishedNovember 20, 1986
GrantedNovember 27, 1991
Term endedMarch 19, 2006
Application numberEP 86103715
Classification (CPC)C07D239/04 +2 more

Timeline

Timeline From EPO dates

1987198919911993199519971999200120032005Application filedMarch 19, 1986PublishedNov 20, 1986Patent grantedNov 27, 1991Term endedMarch 19, 2006

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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