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Expired European patentEurope

Crosslinked copoly(carbonate/phosphonate)compositions

EP 0008823 B1 · Applicant: STAUFFER CHEMICAL COMPANY

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Overview

The published document from the EPO: abstract, claims, description and drawings. Open it full size

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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 August 8, 1979 and granted August 4, 1982. A European patent lasts at most 20 years from filing, so its term ended August 8, 1999.
  • 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 February 8, 2005.
  • 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.
FiledAugust 8, 1979
PublishedMarch 19, 1980
GrantedAugust 4, 1982
Term endedAugust 8, 1999
Application numberEP 79200438
Classification (CPC)C08G64/00 +1 more

Timeline

Timeline From EPO dates

1980198219841986198819901992199419961998Application filedAug 8, 1979PublishedMarch 19, 1980Patent grantedAug 4, 1982Term endedAug 8, 1999

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.