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European application, no grantEurope

Core-shell composite polymers having high amounts of carboxylic acid units in the shell

EP 0045357 A1 · Applicant: GAF CORPORATION

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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 May 27, 1981 and never granted as a European patent. Had it been granted, its 20-year term would have ended May 27, 2001.
  • 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 November 27, 2006.
  • 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.
FiledMay 27, 1981
PublishedFebruary 10, 1982
GrantedNever granted
Term endedMay 27, 2001
Application numberEP 81104094
Classification (CPC)C08F285/00

Timeline

Timeline From EPO dates

1982198419861988199019921994199619982000Application filedMay 27, 1981PublishedFeb 10, 1982Term endedMay 27, 2001

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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