Product-dispensing method and apparatus
CA 1306222 C · Owner: Felt, George Robert · Inventors: Wagle, Sudhakar Shantaram; Multhauf, Donna Kay; Felt, George Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An aerosol spray dispenser of flowable pharmaceutical product is provided with a flotation stabilizing arrangement such that it will float in water in a stabilized erect position even when empty of product; a scale is associated with the dispenser so that the depth at which it floats can be read by comparing the position of the surface of the water in which it floats with graduations on the scale. The stabilizing action may be obtained by placing the dispenser in a floatable bottom-weighted vial with, the scale located in the exterior of the vial and the combination, of vial and dispenser then floated in water. In other embodiments the vial need not be used, in which case 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 11, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 11, 2009.
- 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.