Method and apparatus for determining the filling capacity of tobacco and the hardness of cigarettes
CA 2022790 A1 · Owner: Rattemeyer, Martin · Inventors: Graudejus, Wolfgang; Rattemeyer, Martin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and an apparatus for the determination of the filling capacity of tobacco and the hardness of cigarettes are described. Tobacco (R) in a container (30) is compressed by a test plunger (8) driven in a pre-set manner by a motor (18) such that the, force exerted on the tobacco (R) is measured and passed to a computer (44) as is the measured length of the tobacco column. After the end of the compression movement the test plunger (8) rests in its end position for a relaxation period and the force, acting on the tobacco (R) is measured at pre-set time intervals and passed on to the computer (44). The temperature and the moisture of the tobacco (R) are determined in the apparatus during …
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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
- Filed August 7, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 7, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 7, 2012.
- 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
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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.