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Expired European patentEurope

Method for making phenol-formaldehyde-polyamine curing agents for epoxy resins

EP 0114875 B1 · Applicant: CUMMINGS, Lowell O.

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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 July 18, 1983 and granted November 2, 1989. A European patent lasts at most 20 years from filing, so its term ended July 18, 2003.
  • 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 January 18, 2009.
  • 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.
FiledJuly 18, 1983
PublishedAugust 8, 1984
GrantedNovember 2, 1989
Term endedJuly 18, 2003
Application numberEP 83902559
Classification (CPC)C08G14/06 +1 more

Timeline

Timeline From EPO dates

1984198619881990199219941996199820002002Application filedJuly 18, 1983PublishedAug 8, 1984Patent grantedNov 2, 1989Term endedJuly 18, 2003

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

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.