Tobacco products and methods for preparation
CA 1074986 A · Owner: Tobacco Research And Development Institute Limited · Inventors: Thirion, Jacobus C.; Malan, Johannes D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of upgrading a mass of tobacco which comprises fermenting another tobacco sample in an aqueous medium to which has been added a suitable carbohydrate with an alcohol producing yeast, is characterised by utilising material from the resultant liquid medium to upgrade the mass of tobacco. The resultant liquid itself or an extract thereof may be utilised.
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
- Granted April 8, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 8, 1997.
- 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.