Assay using an absorbent material
CA 2038776 A1 · Owner: Kearns, Kevin · Inventors: Mcpartland, Richard; Kearns, Kevin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An assay for detecting an analyte which comprises applying a sample containing analyte to a surface of an absorbent material having at least one binder for the analyte supported on at least a portion of the surface. The absorbent material has a porosity which is capable of retaining non - charged particles having a size of at least 0 .1 micron and no greater than 10 microns on the surface thereof. The sample flows past the binder and into the absorbent material. Porous plastics or ceramics are preferred absorbent materials. -23-
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 March 21, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 21, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 21, 2013.
- 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.