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Expired European patentEurope

Ultrapure hyaluronic acid and method of making it

EP 0144019 B1 · Applicant: MILES INC.

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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 14, 1984 and granted June 13, 1990. A European patent lasts at most 20 years from filing, so its term ended November 14, 2004.
  • 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 14, 2010.
  • 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 14, 1984
PublishedJune 12, 1985
GrantedJune 13, 1990
Term endedNovember 14, 2004
Application numberEP 84113716
Classification (CPC)C12P19/26 +2 more

Timeline

Timeline From EPO dates

1985198719891991199319951997199920012003Application filedNov 14, 1984PublishedJune 12, 1985Patent grantedJune 13, 1990Term endedNov 14, 2004

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

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.