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Expired European patentEurope

Method for damp-proofing gypsum plaster using at least an alkylhydrogenopolysiloxane and at least a hydrocolloid

EP 1068159 B1 · Applicant: RHODIA CHIMIE

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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 March 18, 1999 and granted January 2, 2004. A European patent lasts at most 20 years from filing, so its term ended March 18, 2019.
  • 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 September 18, 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.
FiledMarch 18, 1999
PublishedJanuary 17, 2001
GrantedJanuary 2, 2004
Term endedMarch 18, 2019
Application numberEP 99909037
Classification (CPC)C04B28/14 +1 more

Timeline

Timeline From EPO dates

2000200220042006200820102012201420162018Application filedMarch 18, 1999PublishedJan 17, 2001Patent grantedJan 2, 2004Term endedMarch 18, 2019

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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