Decontaminated biological material
CA 2080830 C · Owner: Bohn, Burghard · Inventors: Bohn, Burghard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns decontaminated biological material, in particular liquids, arising from treatment with acid followed by treatment with alkali. The progress of the treatment can be monitored and/or the end point determined by determining the residual LDH (lactate dehydrogenase) activity. The invention also concerns a process for decontaminating biological material, in particular biological liquids, in which the pH value is lowered by the addition of acid and, after a given length of time raised again by the, addition of alkali. The process of the treatment can be monitored and/or the end point determined by determining the (residual) LDH activity.
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 April 13, 1991 and granted August 13, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 13, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 13, 2013.
- 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.