Gravure-printed banded cigarette paper
CA 2614909 C · Owner: Phan, Tony A. · Inventors: Waymack, Bruce E.; Pithawalla, Yezdi B.; Miser, Don E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cigarette (20), and cigarette paper (22) have a plurality of multilayer bands, (30) formed by printing a highly viscous aqueous film-forming, composition. After heating the composition to lower its, viscosity the bands are applied, to the cigarette paper by gravure printing the composition. The, composition is quenched and gelatinized by contact with the, cool cigarette paper reducing absorption of water by the paper, and reducing wrinkling cockling, and waviness. Multiple gravure printed layers may be used to, form the bands.
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
- Filed August 14, 2006 and granted January 20, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 14, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.