Cytorich process system
CA 2106343 C · Owner: Fox, William Alan · Inventors: Geyer, James Winston; Carrico, Charles Leo Jr.; Knesel, Ernest Arthur Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for preparing a monolayer of cytological material on a cationically-charged substrate includes the steps of separating the cytological material by centrifugation over a density gradient producing a, packed pellet of the cytological material mixing the pellet of the cytological, material withdrawing an aliquot of a predetermined volume of the material from the mixed pellet of the cytological material depositing the aliquot and a, predetermined volume of water into a sedimentation vessel which is, removably secured to the substrate allowing the cytological material to settle onto the substrate under the force of gravity and after settlement of the, cytological material removing the …
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 September 16, 1993 and granted November 17, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 16, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 16, 2015.
- 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.