Cartridge for containing a specimen sample for optical analysis
CA 2708573 C · Owner: Columbus, Richard L. · Inventors: Columbus, Richard L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cartridge (21) for holding a test specimen with an extremely small volume. The cartridge has a test chamber (63) and a vestibule (66) through which the test fluids are inserted into the test chamber. The cartridge has a stopper (60) having a pair of seals (72 74), the first of which seals the test chamber inlet (65) between the vestibule and the test chamber and the second of which seals the mouth (67) of the vestibule so that when the stopper is in place the test chamber is closed to the admission of air other contaminants and the vestibule is similarly closed against escape of the overflow from the test chamber.
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 February 12, 2002 and granted May 1, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 12, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 12, 2024.
- 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.