Occult fecal blood test slide and manufacturing method
CA 1262229 C · Owner: Hunsinger, Peter · Inventors: Zwarun, Andrew A.; Hunsinger, Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A test slide for conducting a test for occult blood in feces is fabricated with a sheet of filter paper or other reagent carrier material impregnated with a test reagent and packaged in an envelope enclosure which overlies both sides of the reagent carrier sheet. One or more specimen apertures are provided in the enclosure on one side of the reagent carrier sheet to permit the placement of feces specimens on the reagent carrier sheet through the apertures. On the other side the enclosure is, openable to form a test opening (which encompasses the feces specimens) so that a developing reagent can be applied to the other side of the reagent carrier sheet at the location of the specimens. A …
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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 10, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 10, 2006.
- 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.