Smokable filler material for smoking articles
CA 2247932 C · Owner: British American Tobacco (Investments) Limited · Inventors: O'Reilly, Rosemary Elizabeth; Vernet, Delphine; Mcadam, Kevin Gerard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a smoking article smokable filler material which comprises a proportion of a non-tobacco plant material which has an initially high fat or high oil content. The high fat or high oil containing material in combination with a non-combustible inorganic filler a binder, and an aerosol , generating source provides a smokable filler material which may also have a low coal static peak burning temperature.
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 March 4, 1997 and granted September 10, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 4, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 4, 2019.
- 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.