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Expired European patentEurope

Hydrophobic precipitated silica with high whiteness and low moisture absorbance

EP 1281735 B1 · Applicant: Degussa AG

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Overview

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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 June 11, 2002 and granted April 8, 2009. A European patent lasts at most 20 years from filing, so its term ended June 11, 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.
FiledJune 11, 2002
PublishedFebruary 5, 2003
GrantedApril 8, 2009
Term endedJune 11, 2022
Application numberEP 02012876
Classification (CPC)C09K3/10 +2 more

Timeline

Timeline From EPO dates

2003200520072009201120132015201720192021Application filedJune 11, 2002PublishedFeb 5, 2003Patent grantedApril 8, 2009Term endedJune 11, 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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