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Expired European patentEurope

Corrosion inhibitor for cement compositions

EP 1094995 B1 · Applicant: MBT HOLDING 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 22, 1999 and granted July 30, 2003. A European patent lasts at most 20 years from filing, so its term ended June 22, 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 December 22, 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.
FiledJune 22, 1999
PublishedMay 2, 2001
GrantedJuly 30, 2003
Term endedJune 22, 2019
Application numberEP 99931123
Classification (CPC)C04B24/121

Timeline

Timeline From EPO dates

2000200220042006200820102012201420162018Application filedJune 22, 1999PublishedMay 2, 2001Patent grantedJuly 30, 2003Term endedJune 22, 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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