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Expired European patentEurope

A method and compositions for relaxing natural curls and kinks in human hair and a package for these compositions

EP 0011511 B1 · Applicant: Lamaur Inc.

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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, 1979 and granted November 7, 1984. A European patent lasts at most 20 years from filing, so its term ended November 20, 1999.
  • 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, 2005.
  • 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, 1979
PublishedMay 28, 1980
GrantedNovember 7, 1984
Term endedNovember 20, 1999
Application numberEP 79302642
Classification (CPC)A61K8/23 +2 more

Timeline

Timeline From EPO dates

1980198219841986198819901992199419961998Application filedNov 20, 1979PublishedMay 28, 1980Patent grantedNov 7, 1984Term endedNov 20, 1999

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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