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Expired European patentEurope

Process for making and use of anionic clay materials

EP 1027151 B1 · Applicant: Intercat-Savannah, Inc.

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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 September 15, 1998 and granted May 7, 2008. A European patent lasts at most 20 years from filing, so its term ended September 15, 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 March 15, 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.
FiledSeptember 15, 1998
PublishedAugust 16, 2000
GrantedMay 7, 2008
Term endedSeptember 15, 2018
Application numberEP 98948188
Classification (CPC)B01J21/10 +2 more

Timeline

Timeline From EPO dates

1999200120032005200720092011201320152017Application filedSep 15, 1998PublishedAug 16, 2000Patent grantedMay 7, 2008Term endedSep 15, 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

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