Improved phase separation-microencapsulated pharmaceutical compositions useful for alleviating dental disease
CA 2271571 C · Owner: Lawter, James Ronald · Inventors: Lawter, James Ronald; Lanzilotti, Michael Gerard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pharmaceutical composition comprising a microencapsulated pharmaceutical agent, wherein the microcapsules are prepared by phase separation microencapsulation employing a volatile silicone fluid as a hardening agent and wherein, the microcapsules are comprised of pharmaceutical agent biocompatible encapsulating polymer, and volatile silicone fluid hardening agent.
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 December 20, 1989 and granted February 8, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 20, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 20, 2011.
- 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.