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Expired European patentEurope

Crystalline copolyamides from terephthalic acid, isophthalic acid and hexamethylenediamine

EP 0310752 B1 · Applicant: AMOCO 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 February 7, 1984 and granted April 12, 1995. A European patent lasts at most 20 years from filing, so its term ended February 7, 2004.
  • 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 August 7, 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.
FiledFebruary 7, 1984
PublishedApril 12, 1989
GrantedApril 12, 1995
Term endedFebruary 7, 2004
Application numberEP 88108488
Classification (CPC)C08G69/265

Timeline

Timeline From EPO dates

1985198719891991199319951997199920012003Application filedFeb 7, 1984PublishedApril 12, 1989Patent grantedApril 12, 1995Term endedFeb 7, 2004

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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