Use of crosslinked crystals as a novel form of enzyme immobilization
CA 2087730 C · Owner: Navia, Manuel A. · Inventors: Navia, Manuel A.; St. Clair, Nancy L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of immobilizing an enzyme by forming crystals of the enzyme and generally, also cross-linking the resulting crystals through the use of a bifunctional reagent; crosslinked immobilized enzyme crystals (CLECs) made by this method; lyophilization of CLECs made by this method; lyophilized crosslinked immobilized CLECs and a method of making a desired product by means of a reaction catalyzed by a CLEC or set of CLECs.
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 July 30, 1991 and granted July 20, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 30, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by 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.