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Expired European patentEurope

Oxazoline surfactant anode additive for alkaline electrochemical cells

EP 1506584 B1 · Applicant: RAYOVAC 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 December 13, 2002 and granted May 2, 2012. A European patent lasts at most 20 years from filing, so its term ended December 13, 2022.
  • Supplementary protection certificates extend only medicine and crop-protection patents, and it isn't classified as either.
  • 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.
FiledDecember 13, 2002
PublishedFebruary 16, 2005
GrantedMay 2, 2012
Term endedDecember 13, 2022
Application numberEP 02797314
Classification (CPC)H01M4/06 +2 more

Timeline

Timeline From EPO dates

2003200520072009201120132015201720192021Application filedDec 13, 2002PublishedFeb 16, 2005Patent grantedMay 2, 2012Term endedDec 13, 2022

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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