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Expired European patentEurope

Composition, method, and element for the assay of neuraminic acids

EP 0038529 B1 · Applicant: EASTMAN KODAK COMPANY (a New Jersey corporation)

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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 April 15, 1981 and granted March 30, 1983. A European patent lasts at most 20 years from filing, so its term ended April 15, 2001.
  • 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 October 15, 2006.
  • 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.
FiledApril 15, 1981
PublishedOctober 28, 1981
GrantedMarch 30, 1983
Term endedApril 15, 2001
Application numberEP 81102913
Classification (CPC)C12Q1/527 +2 more

Timeline

Timeline From EPO dates

1982198419861988199019921994199619982000Application filedApril 15, 1981PublishedOct 28, 1981Patent grantedMarch 30, 1983Term endedApril 15, 2001

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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