Patent Yard Sign in
Expired European patentEurope

Non-aqueous electrolyte secondary cell

EP 0964461 B1 · Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

EPO PDF

Overview

The published document from the EPO: abstract, claims, description and drawings. Open it full size

Read the whole patent

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.

Google PatentsEPO PDF

Why it's free to use

  • Filed October 6, 1998 and granted April 11, 2007. A European patent lasts at most 20 years from filing, so its term ended October 6, 2018.
  • 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 April 6, 2024.
  • 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.
FiledOctober 6, 1998
PublishedDecember 15, 1999
GrantedApril 11, 2007
Term endedOctober 6, 2018
Application numberEP 98945633
Classification (CPC)H01M50/562 +2 more

Timeline

Timeline From EPO dates

1999200120032005200720092011201320152017Application filedOct 6, 1998PublishedDec 15, 1999Patent grantedApril 11, 2007Term endedOct 6, 2018

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

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.