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Expired European patentEurope

Cobalt (III) complex-containing image-forming compositions

EP 0044729 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, 1981 and granted September 26, 1984. A European patent lasts at most 20 years from filing, so its term ended July 17, 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 January 17, 2007.
  • 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, 1981
PublishedJanuary 27, 1982
GrantedSeptember 26, 1984
Term endedJuly 17, 2001
Application numberEP 81303297
Classification (CPC)B41M5/32

Timeline

Timeline From EPO dates

1982198419861988199019921994199619982000Application filedJuly 17, 1981PublishedJan 27, 1982Patent grantedSep 26, 1984Term endedJuly 17, 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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