Cea immunoassay free of human anti-mouse antibody false positives
CA 1296625 C · Owner: Hansen, Hans J. · Inventors: Hansen, Hans J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A CEA immunoassay includes a step for inactivation of interfering human antibodies against non-human immunoglobulin wherein a buffered, serum or plasma sample at about pH 5.0 is heated at about 90°C for about 15 minutes prior to sandwich assay using capture and probe monoclonals that bind to heat-stable CEA epitopes.
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 March 3, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 3, 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.