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Expired European patentEurope

Process for the preparation of thermomigrating dyeings

EP 0545161 B1 · Applicant: HOECHST MITSUBISHI KASEI CO., LTD.

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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 20, 1992 and granted November 15, 1995. A European patent lasts at most 20 years from filing, so its term ended November 20, 2012.
  • 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 20, 2018.
  • 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 20, 1992
PublishedJune 9, 1993
GrantedNovember 15, 1995
Term endedNovember 20, 2012
Application numberEP 92119754
Classification (CPC)C09B57/00 +2 more

Timeline

Timeline From EPO dates

1993199519971999200120032005200720092011Application filedNov 20, 1992PublishedJune 9, 1993Patent grantedNov 15, 1995Term endedNov 20, 2012

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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