Device, method and apparatus for implementing the method, for dosing at least a particular constituent in a product sample
CA 2316833 A1 · Owner: Canton, Michel · Inventors: Canton, Michel; Rousseau, Alain
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a device for dosing at least a particular constituent in a product sample comprising a receptacle (110) and a cover (120) assembled to form a closed container. The invention is characterised in that said container has a vertical axis (101) the receptacle and the cover bear coaxial cylindrical walls (111 112, 113) defining concentric annular chambers (102 103, 104) inside the container, the walls separating chambers each comprising an opening (11a 112a), the cover and the container can rotate relatively to each other about the vertical axis and said openings are placed in predetermined manner so that by relative displacement of the walls the openings are positioned in …
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 December 7, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 7, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 7, 2020.
- 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.