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Expired European patentEurope

Size and weight graded multi-layered EAS diffusion electrodes

EP 0110491 B1 · Applicant: WESTINGHOUSE ELECTRIC CORPORATION

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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 April 22, 1983 and granted August 24, 1988. A European patent lasts at most 20 years from filing, so its term ended April 22, 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 October 22, 2008.
  • 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.
FiledApril 22, 1983
PublishedJune 13, 1984
GrantedAugust 24, 1988
Term endedApril 22, 2003
Application numberEP 83302293
Classification (CPC)H01M4/86

Timeline

Timeline From EPO dates

1984198619881990199219941996199820002002Application filedApril 22, 1983PublishedJune 13, 1984Patent grantedAug 24, 1988Term endedApril 22, 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

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