Photothermographic element, composition and process
CA 1045876 A · Owner: Eastman Kodak Company · Inventors: Vanallan, James A.; Costa, Lorenzo F.; Grum, Frank
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
or the Disclosure, A stabilizer precursor comprising a compound which 13 a photolytically active polybrominated organic compound comprising (a) a 2,4-bis(tribromomethyl)-s-triazine (b) a polybromoalkyl-, sulronyl compound having an aromatic chromophore group or, (c) a combination of the described stabilizer precursors in a, photothermographic element or composition comprising photographic silver halide provides improved post-processing stability of the element or composition. The described stabilizer precursors are useful in photothermographic materials for, example, comprising photographic silver halide and an oxidation-reduction image-forming combination comprising a heavy metal salt …
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 January 9, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 9, 1996.
- 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.