Coatings with ionically and convalently crosslinked neutralized carboxylated polymers
CA 2106591 A1 · Owner: Swarup, Vijay · Inventors: Thaler, Warren Alan; Kresge, Edward Nathan; Manalastas, Pacifico Viernes
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composite comprising a substrate and a polymeric coating adhered to at least one surface of said substrate said polymer coating, having a thickness of about 1 to about 100 micrometers wherein , said polymer coating comprises an ionically and covalently crosslinked neutralized carboxylated polymer having a carboxylate content of about 5 to about 300 meq. per 100 grams of said ionically and covalently crosslinked neutralized carboxylated polymer.
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 January 3, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 3, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 3, 2014.
- 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.