Pharmaceutical carrier formulation
CA 2388471 A1 · Owner: Saunders, Richard William · Inventors: Saunders, Richard William; Yoon, Joseph Kyuwung; Fawzi, Mahdi Bakir
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention provides carrier systems useful in preparing pharmaceutical formulations, the systems comprising, by weight percentage from about 1 % to , about 20 %, preferably from about 5 % to about 12 % of a surfactant , component; from about 55 % to about 93 % preferably from about 60 % to about , 85 % of a component of one or more polyethylene glycols (PEG); and from about 1 % to about 25 %, preferably from about 5 % to about 15 % of one or more , sucrose fatty acid esters or polyvinylpyrrolidone (PVP) with a K value between about 15 and about 90, preferably with a K value of from about 16 to about 18 most preferably about 17, as defined in USP/NF or a combination of one or , more …
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 September 26, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 26, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 26, 2022.
- 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.