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Expired European patentEurope

Zinc-bromine battery and operation thereof

EP 0113159 B1 · Applicant: EXXON RESEARCH AND ENGINEERING COMPANY

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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 12, 1983 and granted January 28, 1987. A European patent lasts at most 20 years from filing, so its term ended July 12, 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 12, 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 12, 1983
PublishedJuly 11, 1984
GrantedJanuary 28, 1987
Term endedJuly 12, 2003
Application numberEP 83304040
Classification (CPC)H01M10/52 +1 more

Timeline

Timeline From EPO dates

1984198619881990199219941996199820002002Application filedJuly 12, 1983PublishedJuly 11, 1984Patent grantedJan 28, 1987Term endedJuly 12, 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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