Reduced ignition propersity smoking article with a polysaccharide treated wrapper
CA 2442616 A1 · Owner: Lorillard Licensing Company, Llc · Inventors: Zawadzki, Michael A.; Ihrig, Arthur M.; Grider, David A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A smoking article (10) having reduced ignition propensity is disclosed. The smoking article includes a tobacco column (12) a wrapper (14) surrounding the , tobacco column (12) and a filter element (16). The wrapper (14) has a base permeabilitY, an untreated area (20) and a least one discrete area (22) treated with a composition to reduce the base permeability. The treated area is treated with a composition initially comprising a permeability reducing substance initially dissolved in a non-derivatizing solvent mixture initially comprising a solvent component and at least one ingredient that as part of the solvent mixture is a self-association disruptor for the permeability reducing …
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 26, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 26, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 26, 2024.
- 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.