Process for improving the smoking properties of reconstituted tobacco
CA 1094907 A · Owner: American Brands, Inc. · Inventors: Brooks, John G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, A method of improving the smoking properties of a tobacco product containing reconstituted tobacco by causing both carbon and one or more alkaline earth element oxides carbonates, bicarbonates, basic carbonates mixed carbonates, hydroxides or compounds of alkaline earth elements which form oxides of such elements at or below the temperature of the burning tobacco product to be incorporated in the reconstituted tobacco so that after incorporation the weight ratio of carbon to alkaline earth element compounds is in the range of one-to-ten and ten-to-one weight. The total amount of carbon and alkaline earth element compound is in the range of two (2) to fifty (50) …
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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 February 3, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 3, 1998.
- 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.