High sensitivity detection of peroxidase activity
CA 2000686 A1 · Owner: Wagner, Daniel B. · Inventors: Hoke, Randy A.; Wagner, Daniel B.; Vonk, Glen P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A new class of peroxidase substrates consists of o-diaminobenzenes having a substituent in the position. The new substrates may be used in immunoassays in which a peroxidase is the lable or in, assays for the peroxidase itself. Immunoassays using other enzyme labels which cause formation of hydrogen peroxide may be followed using the substrate of the invention by adding the substrate and a peroxidase to the assay fluid and detecting color formed as a result of oxidation of the substrate by the formed peroxide.
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 October 13, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 13, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 13, 2011.
- 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.