Expired Canadian patentCanada
Cigarette
CA 2003363 C · Owner: Brown & Williamson Tobacco Corporation · Inventors: Lauterbach, John Harvey
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cigarette having a generally cylindrical tobacco rod having a tobacco filler of ground tobacco. The tobacco rod has a circumference within the range of 10 mm to 19 mm. The tobacco rod is circumscribed by a combustible paper.
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 November 20, 1989 and granted October 22, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 20, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 20, 2011.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 20, 1989
GrantedOctober 22, 1996
Term endedNovember 20, 2009
Patent numberCA 2003363 C
Classification (IPC)A24D1/00
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.