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Expired European patentEurope

Surface modification method for inorganic oxide powder, powder produced by the method and use of the powder

EP 1587883 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 January 23, 2004 and granted June 10, 2015. A European patent lasts at most 20 years from filing, so its term ended January 23, 2024.
  • 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.
FiledJanuary 23, 2004
PublishedOctober 26, 2005
GrantedJune 10, 2015
Term endedJanuary 23, 2024
Application numberEP 04704755
Classification (CPC)C09C3/063 +2 more

Timeline

Timeline From EPO dates

2005200720092011201320152017201920212023Application filedJan 23, 2004PublishedOct 26, 2005Patent grantedJune 10, 2015Term endedJan 23, 2024

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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