Compressible guaifenesin compositions, method for making same and method for making compressed guaifenesin dosage forms therefrom
CA 2450233 C · Owner: Upadhyay, Ajay Hasmukhlal · Inventors: Upadhyay, Ajay Hasmukhlal
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A compressible guaifenesin composition containing guaifenesin and a binder and being in the form of particles and wherein by sieve analysis based on the , total weight of the composition less than about 30 percent by weight of the particles exhibit a particle size of greater than about 425 micrometers and greater than about 80 percent by weight of the particles exhibit a particle size of greater than about 45 micrometers provides improved flow properties , as well improved robustness and flexibility with regard to the processing conditions used to produce dosage forms from such compositions.
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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 June 7, 2002 and granted December 18, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 7, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 7, 2024.
- 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.