Smoking products containing antioxidants
CA 2303863 A1 · Owner: Thione International, Inc. · Inventors: Hersh, Rebecca; Hersh, Theodore
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composition for inclusion within a cigarette cigar or pipe. The composition , can be included within the tobacco itself a filter for filtering tobacco , smoke once burned or even within the paper or wrapper surrounding the tobacco product. The composition is capable of reducing free radical damage to the oropharyngeal cavity, respiratory tract and lungs resulting from tobacco smoke. The composition includes L-glutathione and a source of selenium such as selenomethionine.
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, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 14, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 14, 2020.
- 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.