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Expired European patentEurope

Keratin derivative, process for its preparation and treatment composition containing it

EP 0099780 B1 · Applicant: L'OREAL

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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 23, 1983 and granted September 6, 1989. A European patent lasts at most 20 years from filing, so its term ended June 23, 2003.
  • 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 23, 2008.
  • 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 23, 1983
PublishedFebruary 1, 1984
GrantedSeptember 6, 1989
Term endedJune 23, 2003
Application numberEP 83401305
Classification (CPC)A61Q19/00 +2 more

Timeline

Timeline From EPO dates

1984198619881990199219941996199820002002Application filedJune 23, 1983PublishedFeb 1, 1984Patent grantedSep 6, 1989Term endedJune 23, 2003

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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