Osmotic system for delivery of dilute solutions
CA 1330886 C · Owner: Bend Research Inc. · Inventors: Smith, Kelly L.; Robinson, Wendy P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is disclosed a device that is capable of providing a constant rate of delivery of beneficial agent at concentrations less than saturation. Osmotic bodies or diffusional bodies containing the agent are contained within a reservoir of the device. A saturated solution of the agent is delivered at a constant rate from the bodies, and this solution is diluted at a constant rate by water diffusing into the device. The rate of agent delivery, the concentration of the agent solution delivered, the total dose of agent delivered, and the number of agents delivered from the same device may all be independently controlled.
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
- Granted July 26, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 26, 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.