Controlled hue test device
CA 1296243 C · Owner: Reinsch, James W. · Inventors: Warchal, Mary E.; Albarella, James P.; Charlton, Steven C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Test compositions and test devices are provided which are capable of generating different hues at different analyte concentrations. Visual results for clinically important analytes such as, glucose and cholesterol, are provided by use of compositions containing two independent catalytic systems which are reactive with a common substrate generated from the analyte of interest to produce, visual endpoints of different hues for different concentrations of analyte. Preferred formulations provide a RAINBOW of hues, the particular final hue produced depending on the concentration of the analyte.
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
- Granted February 25, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 25, 2009.
- 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.