Porous microbead permeable to macromolecules having immobilized therein at least one biological particulate
CA 2024196 A1 · Owner: Garofalo, Flavio A. · Inventors: Chang, Thomas M. S.; Garofalo, Flavio A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a porous microbead having a size range between 100µ and 10mm and at least one biological particulate immobilized therein, said immobilized particulate being selected from the group consisting of microorganism cell, a suspension, of enzymes and a suspension of proteins wherein said microbead is, further characterized by having pores therethrough and wherein the average size of said pores ranges between 30.ANG. and 1µ and allows the release of any macromolecule derived from said immobilized particulate to the outside of said microbead and the exchange of any other macromolecule between the outside and the inside of said microbead. There is also provided a …
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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
- Filed August 29, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 29, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 29, 2012.
- 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.