Solid dispersion system of pranlukast with improved dissolution, and the preparing method thereof
CA 2405459 A1 · Owner: Lee, Sang, Deuk · Inventors: Lee, Sang, Deuk
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a novel composition of pranlukast of which , solubility in aqueous media is low method for producing said composition and oral preparation comprising said composition. More specifically the present , invention is related to oral solid dispersion composition of pranlukast with improved dissolution characterized in comprising (A) pranlukast and (B) at least one polymer selected from a group consisting of hydroxypropylcellulose and hydroxypropylmethylcellulose; method for preparation thereof; and oral preparation prepared thereby.According to the present invention pranlukast , solid dispersion composition with high oral absorption rate via improvement in …
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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, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 17, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 17, 2023.
- 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
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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.