Expired Canadian patentCanada
Immunoassay test strip
CA 1289875 C · Owner: Immunomatrix, Inc. · Inventors: Fuerstenberg, Richard K.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An immunoassay dry test strip comprising a matrix having three zones wherein bypass of the second zone of test fluid containing analyte and label from the first zone is prevented by means to seal the second zone.
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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
- Granted October 1, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 1, 2008.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 30, 1987
GrantedOctober 1, 1991
Term endedOctober 1, 2008
Patent numberCA 1289875 C
Classification (IPC)G01N33/54
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.