Metal ion coordinated polyamine resins for the lowering of blood cholesterol
CA 2042870 C · Owner: Lowchol Scientific Inc. · Inventors: Wu, Gaoming; Brown, George Ronald; Yu, Youlu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention is concerned with a metal ion coordinated polyamine resin in which a non-toxic pharmaceu-, tically acceptable chelating metal ion is coordinated with a cross-linked and non-digestible polymeric amine selected from the group consisting of: (a) polyamine resins with a hydrophilic backbone, of the formula:, P-(CH2)nNHmH or (Ia) (Ib), wherein P represents a hydrophilic cross-linked and non-, digestible homopolymer backbone m is an integer varying, from 1 to 10 inclusive and n, o and p are, independently, integers varying from 2 to 12 inclusive; (b) polyamine resins with a hydrophobic backbone, of the formula: P'-NH(CH2)nmNH2 (II), wherein P' represents a hydrophobic cross-linked …
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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 May 17, 1991 and granted November 26, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 17, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 17, 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.