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Expired European patentEurope

Azo dimer and trimer fugitive tints

EP 0498104 B1 · Applicant: MILLIKEN RESEARCH CORPORATION

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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 25, 1991 and granted October 23, 1996. A European patent lasts at most 20 years from filing, so its term ended September 25, 2011.
  • 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 25, 2017.
  • 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 25, 1991
PublishedAugust 12, 1992
GrantedOctober 23, 1996
Term endedSeptember 25, 2011
Application numberEP 91308737
Classification (CPC)C09B69/00 +1 more

Timeline

Timeline From EPO dates

1992199419961998200020022004200620082010Application filedSep 25, 1991PublishedAug 12, 1992Patent grantedOct 23, 1996Term endedSep 25, 2011

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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