Bioartificial devices and cellular matrices therefor
CA 2239498 C · Owner: Usala, Anton-Lewis · Inventors: Usala, Anton-Lewis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An implantable device for the effective release of therapeutically desirable entities including hormones, wherein a matrix containing a cellular moiety which produces a therapeutically desirable entity is encapsulated with a nonimmunogenic polymeric material of poly-para-xylylene or other aromatic based moiety having a membrane portion with a porosity effective to block passage therethrough of immunogenic agents while permitting passage therethrough of nutrients for said cellular moiety and of the entity produced thereby; an improved matrix for the storage, manufacture functional testing, and viral , infection testing of cellular moieties comprising a collagen and aqueous nutrient …
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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 November 14, 1996 and granted September 9, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 14, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 14, 2018.
- 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.