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Expired Canadian patentCanada

Slipping layer for dye-donor element used in thermal dye transfer

CA 1253689 A · Owner: Eastman Kodak Company · Inventors: Harrison, Daniel J.; Kan, Hsin-Chia; Vanier, Noel R.

CIPO record

Overview

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Abstract From the Canadian patent

Abstract, A dye-donor element for thermal dye transfer comprising a support having on one side thereof a dye layer and on the other side a slipping layer comprising R lubricating material dispersed in a polymeric binder, the lubricating material being poly(vinyl stearate), poly(caprolactone) or straight chain alkyl or polyethylene oxide perfluoroalkylated ester or perfluoroalkylated ether.

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted May 9, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 9, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 4, 1986
GrantedMay 9, 1989
Term endedMay 9, 2006
Patent numberCA 1253689 A
Classification (IPC)B41M5/26 +2 more

Timeline

Timeline From CIPO dates

1987198919911993199519971999200120032005Application filedDec 4, 1986Patent grantedMay 9, 1989Term endedMay 9, 2006

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.