Methods and gel compositions for encapsulating living cells and organic molecules
CA 2443060 A1 · Owner: Fagnani, Roberto · Inventors: Dong, Xiaofan; Hahn, Soonkap; Tsinberg, Pavel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for encapsulating biologics within a hydrogel by using an aqueous solution of an isocyanate-functional hydrogel prepolymer which is mixed with an amount of biologics and an aqueous solution containing a dithiol crosslinking agent under physiological pH conditions. An additional bidentate crosslinking agent may be included. The product of such method may be a bioreactor or an assay device having a plurality of different biologics encapsulated at predetermined locations in a substrate.
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 2, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 2, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 2, 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.