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Expired European patentEurope

Analytical element having improved spreading zone and method of use

EP 0158993 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, 1985 and granted April 12, 1989. A European patent lasts at most 20 years from filing, so its term ended April 15, 2005.
  • 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, 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.
FiledApril 15, 1985
PublishedOctober 23, 1985
GrantedApril 12, 1989
Term endedApril 15, 2005
Application numberEP 85104482
Classification (CPC)C12Q1/48 +1 more

Timeline

Timeline From EPO dates

1986198819901992199419961998200020022004Application filedApril 15, 1985PublishedOct 23, 1985Patent grantedApril 12, 1989Term endedApril 15, 2005

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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