Matrix stabilized enzyme crystals and methods of use
CA 2442524 A1 · Owner: Su, Hongsheng · Inventors: Zhang-Sun, Guiyi; Su, Hongsheng; Yu, Xuefeng
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to the stabilization of enzymes through the formation of matrix stabilized enzyme crystals. A matrix stabilized enzyme crystal is formed through cross-linking a polymer having one or more reactive moieties with an enzyme crystal using a low concentration of a multi-functional crosslinking reagent. The invention includes matrix stabilized enzyme crystals of phenylalanine ammonia lyase and a method of using to treat hyperphenylalaninemia.
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 February 15, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 15, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 15, 2024.
- 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.