Controlled-release, low-dose aspirin formulation and method of treating vascular occlusive disease therewith
CA 2006975 C · Owner: Fitzgerald, Garret Adare · Inventors: Fitzgerald, Garret Adare; Charman, William Neil; Frisbee, Steven Edgar
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An aqueous-based formulation for coating ASA granules to provide granules that may be compressed into tablets and that show approximately zero-order release kinetics for release rates of 5 to 15 mg/hour over a period extending five to eight hours is provided. the coating formulation preferably consists of an acrylate/methacrylate copolymer, hydroxypropylmethylcellulose sodium chloride and, talc. A film-coated tablet comprised of the coated granules, filler granules, excipients, binders and disintegrants is also provided, as are processes for preparing the tablets and granules and methods for their use in. the treatment of vascular occlusive diseases.
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 January 2, 1990 and granted April 4, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 2, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 2, 2012.
- 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.