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Process for producing aluminum material for electrolytic capacitor electrode, aluminum material for electrolytic capacitor electrode and process for producing electrode material for electrolytic capacitor

EP 1498513 B1 · Applicant: Showa Denko K.K.

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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 25, 2003 and granted February 2, 2011. A European patent lasts at most 20 years from filing, so its term ended April 25, 2023.
  • 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.
FiledApril 25, 2003
PublishedJanuary 19, 2005
GrantedFebruary 2, 2011
Term endedApril 25, 2023
Application numberEP 03719219
Classification (CPC)C22F1/04 +1 more

Timeline

Timeline From EPO dates

2004200620082010201220142016201820202022Application filedApril 25, 2003PublishedJan 19, 2005Patent grantedFeb 2, 2011Term endedApril 25, 2023

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

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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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