Dispenser comprising displaceable matrix with solid state properties
CA 1331440 C · Owner: Cortese, Richard · Inventors: Cortese, Richard; Wong, Patrick S. L.; Eckenhoff, James B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A dispenser is enclosed for delivering a beneficial agent to an environment of use. The dispenser comprising a wall that surrounds an internal space comprising a first means in the dispenser for changing from a dispenser state to an environment of use state on leaving the dispenser, a beneficial agent in the first means and a second means, in the dispenser for aiding in displacing the first means from the dispenser.
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 August 16, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 16, 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.