Quantitative clotting assay for activated factor vii
CA 2108282 C · Owner: Morrissey, James H. · Inventors: Morrissey, James H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An assay for activated factor VII (factor VIIa) has been developed using truncated tissue factor (TF), a soluble mutant form of TF that retains the cofactor function of TF toward factor VIIa Unlike full-length TF, however, tTF appears not to support the conversion of factor VII to VIIa. As a result the tTF assay for , factor VIIa is free from interference from factor VII in the plasma and is therefore specific for factor VIIa. The assay is much simpler than existing assays, because it is a single-stage clot. ting assay performed almost identically to a PT assay. It is also considerably more sensitive than current assays for factor VIIa in plasma. Since he tTF assay is calibrated against …
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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
- Filed April 9, 1992 and granted September 9, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 9, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 9, 2014.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.