Method and apparatus for preparing substances for optical analysis
CA 2204251 C · Owner: Guirguis, Raouf A. · Inventors: Guirguis, Raouf A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is directed toward a solid matter collection apparatus and a method for collecting matter in a fluid. The apparatus includes a collection site (14) which collects the solid matter (20) at a predetermined density and location, and suitable for exposing the solid matter (20) to electromagnetic spectroscopy (40, 41).
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 November 3, 1995 and granted December 26, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 3, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 3, 2017.
- 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.