Matted photographic imaging materials
CA 1338972 C · Owner: Fautz, Manfred · Inventors: Fautz, Manfred
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The matting agent particles of matted, photographic imaging materials contain a finely divided solid as well as a dye that is only present at the image-forming points after exposure and development of the material. The starry night effect is thereby avoided. The dye can be formed during exposure and development from a precursor e.g. from, silver halide or from couplers for color photography or for diazo processes.
Read the whole patent
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 March 11, 1997. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 11, 2014.
- 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.