Chymotrypsin for the inactivation of prekallikrein activator
CA 1338499 C · Owner: Linnau, Yendra · Inventors: Linnau, Yendra
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In order to avoid the risk of undesired side reactions of blood products, the latter are produced from plasma by using chymotrypsin to inactivate prekallikrein activator. These preparations are obtained by the fractionated enrichment of plasma proteins, with the proviso that a chymotrypsin solution or immobilized chymotrypsin is added to the fractions at any stage of the fractionation process. Before completion of the preparations the chymotrypsin or, the immobilized trypsin is removed from the preparations.
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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
- Granted July 30, 1996. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 30, 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.