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Expired European patentEurope

Ion-selective compositions containing certain crown ethers

EP 0145834 B1 · Applicant: EASTMAN KODAK COMPANY (a New Jersey corporation)

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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 July 17, 1984 and granted October 21, 1992. A European patent lasts at most 20 years from filing, so its term ended July 17, 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 January 17, 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.
FiledJuly 17, 1984
PublishedJune 26, 1985
GrantedOctober 21, 1992
Term endedJuly 17, 2004
Application numberEP 84108391
Classification (CPC)G01N27/3335

Timeline

Timeline From EPO dates

1985198719891991199319951997199920012003Application filedJuly 17, 1984PublishedJune 26, 1985Patent grantedOct 21, 1992Term endedJuly 17, 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

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