Assay device and method
CA 2564609 C · Owner: Whitesides, George M. · Inventors: Parviz, Babak A.; Sia, Samuel K.; Linder, Vincent
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An assay method is described, which comprises the steps of immobilizing a binding partner (e.g. an antigen or antibody) for an analyte to be detected (e.g. an antibody or antigen) on a portion (140) of a surface (130) of a microfluidic chamber (120,122,124); passing a fluid sample over the surface and allowing the analyte to bind to the binding partner; allowing a metal colloid, e.g. a gold-conjugated antibody to associate with the bound , analyte; flowing a metal solution e.g. a silver solution, over the surface such as to form an opaque metallic layer; and detecting the presence of said metallic layer, e.g. by visual inspection or by measuring light transmission through the layer, …
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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 29, 2004 and granted February 11, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 29, 2024.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.