System and method and system for manufacturing cigarettes
CA 2181384 C · Owner: Okumoto, Yutaka · Inventors: Okumoto, Yutaka
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cigarette in which a filler including tobacco shreds obtained by cutting tobacco leaves is wrapped in a packing member made of paper. The tobacco shreds are arranged so that most of said tobacco shreds have their leaf surfaces extending substantially perpendicularly to an axis of said cigarette, and most of said tobacco shreds are radially arranged around the axis of said cigarette in a cross section intersecting perpendicularly to the axis of said cigarette.
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 May 19, 1994 and granted May 12, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 19, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 19, 2016.
- 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.