Adding additives to tobacco materials
CA 2290325 A1 · Owner: Schmekel, Gerald · Inventors: Schmekel, Gerald; Pluckhahn, Frank; Weiss, Arno
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method of continually adding additives to tobacco material, particles, in which the additives are added by a feeder to the tobacco material in passing, through a tube for conveyance of tobacco materials a film flow of the , additive, into which the tobacco material particles immerse being created clinging to at least a , part of the tube wall. The invention relates furthermore to an apparatus for implementing the method.
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 24, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 24, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 24, 2021.
- 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.