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Expired European patentEurope

Powder of electrolytic manganese dioxide and process for producing the same

EP 1184919 B1 · Applicant: TOSOH 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 August 30, 2001 and granted December 22, 2010. A European patent lasts at most 20 years from filing, so its term ended August 30, 2021.
  • 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.
FiledAugust 30, 2001
PublishedMarch 6, 2002
GrantedDecember 22, 2010
Term endedAugust 30, 2021
Application numberEP 01120655
Classification (CPC)C25B1/21 +2 more

Timeline

Timeline From EPO dates

2002200420062008201020122014201620182020Application filedAug 30, 2001PublishedMarch 6, 2002Patent grantedDec 22, 2010Term endedAug 30, 2021

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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