Gas permeable thrombo-resistant coatings and methods of manufacture
CA 2080229 A1 · Owner: Mortensen, J. D. · Inventors: Winters, Suzanne; Berry, Gaylord; Mortensen, J. D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is directed to thrombo-resistant coatings for use with gas permeable biomedical devices and implants. The coatings include a siloxane surface onto which a plurality of amine functional groups have been bonded. Covalently bonded to the amine functional groups are a plurality of poly(ethylene oxide) chains, such that a single poly(ethylene oxide) chain is bonded to a single amine functional group. A quantity of at least one bioactive molecule designed to counteract a specific blood-material incompatibility reaction is covalently bonded to the poly(ethylene oxide) chains, such that a single bioactive molecule is coupled to a single polyethylene oxide chain. The methods …
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 9, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 9, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 9, 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.