Polymeric vehicle for dye image-receiving layer containing a poly(vinylimidazole) mordant
CA 1182320 A · Owner: Eastman Kodak Company · Inventors: Bowman, Wayne A.; Klein, Gerald W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Photographic elements diffusion transfer, assemblages and processes are described wherein a dye image-receiving layer comprising a poly(vinylimidazole) mordant is employed in a nonmordanting water-, permeable polymeric vehicle. The polymeric vehicle comprises recurring units derived from a hydroxyalkyl acrylate ester, and/or an N-hydroxyalkylacrylamide and/or an N-alkylacrylamide. Image sharpness is thereby improved, especially under conditions of high temperature and humidity.
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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 February 12, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 12, 2002.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.