Microorganism antigen extraction methods
CA 2137034 A1 · Owner: Biostar, Inc. · Inventors: Bilodeau, Robert J.; Ostroff, Rachael M.; Bogart, Gregory R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Method for extracting an antigen from a microorganism contained in a sample including the steps of contacting the sample with reagents which generate nitrous acid further contacting the sample with a base or contacting, the sample with hypochlorite and neutralizing the sample.
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 November 30, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 30, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 30, 2016.
- 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.