Cigarette and wrapping materials therefor
CA 2674802 C · Owner: R.J. Reynolds Tobacco Company · Inventors: Fagg, Barry Smith; Henderson, Calvin Wayne; Greene, Carl Carlton, Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Cigarettes are manufactured using modified automated cigarette making apparatus. , Those cigarettes possess smokable rods having paper wrapping materials having additive materials applied thereto as patterns. The additive materials which , can have , the forms of liquid or paste formulations (e.g. aqueous formulations incorporating , starch or modified starch) are applied to a continuous paper web on the cigarette , making apparatus. The formulation is applied to the paper web using application , apparatus possessing rollers. The water-based formulation is dried after application to , the wrapping materials such that the formulation exhibits a moisture content of less , than 10 …
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 December 18, 2003 and granted July 2, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 18, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 18, 2025.
- 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.