Photometer and test sample holder for use therein, method and system
CA 2282303 C · Owner: Skiffington, Richard · Inventors: Skiffington, Richard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A photometer (30) and a test sample holder (50) with the holder having a light-blocking black upper section, (52, 54) and a light-transparent lower section test sample, vial (56), for use with the photometer (30). The photometer (30) includes an o-ring seal (75) at an input (40) to the, light measurement sample chamber (100) so on insertion of, the holder (50), with a test sample (53) to be detected in the test vial (56), the upper section (52 54) blocks, interfering light from the chamber (100).
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 27, 1998 and granted October 7, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 27, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 27, 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.