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Expired European patentEurope

Process for preparing dispersions stabilised with protective colloids

EP 0655464 B1 · Applicant: HOECHST AKTIENGESELLSCHAFT

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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 November 17, 1994 and granted February 4, 1998. A European patent lasts at most 20 years from filing, so its term ended November 17, 2014.
  • 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 May 17, 2020.
  • 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.
FiledNovember 17, 1994
PublishedMay 31, 1995
GrantedFebruary 4, 1998
Term endedNovember 17, 2014
Application numberEP 94118125
Classification (CPC)C08F2/24

Timeline

Timeline From EPO dates

1995199719992001200320052007200920112013Application filedNov 17, 1994PublishedMay 31, 1995Patent grantedFeb 4, 1998Term endedNov 17, 2014

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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