Agglomerate of spherical polyvalent-metal alginate particulates, controlled-release preparation comprising difficultly soluble drug supported on said agglomerate, and processes for producing the both
CA 2276436 A1 · Owner: Nisshinbo Industries, Inc. · Inventors: Nanbu, Hironobu; Myo, Nagayoshi; Hom-Ma, Takeshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for producing a controlled-release preparation capable of rapidly dissolving out at least 99 % of a difficultly soluble drug having a low dissolution rate above the small intestine which process comprises supporting , a difficultly soluble drug having a low intestinal dissolution rate on an agglomerate of spherical polyvalent-metal alginate particulates wherein the specific surface area of the secondary particle ranges from 1 to 280 m2/g.
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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 October 29, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 29, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 29, 2020.
- 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.