Non homogeneous iodinated poly (vinyl carbazole) as photoconductive coating
CA 1069747 A · Owner: G A F Corporation · Inventors: Hort, Eugene V.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A photoconductive iodinated poly(vinyl carbazole) having a mole ratio of iodine to vinyl carbazole between 0.05 and 0.9. The iodinated poly(vinyl carbazole) is used to form a photoconductive layer or coating on a substrate such as a transparent substrate or paper. The iodinated poly(vinyl carbazole) is formed by reacting a slurry of poly(vinyl carbazole) having a high surface area typically, above about 10m2/gram, with a source of iodide and of iodate ions.
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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 January 15, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 15, 1997.
- 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.