Method and apparatus for ejection of particulate material
CA 2241406 A1 · Owner: Tonejet Corporation Pty. Ltd. · Inventors: Newcombe, Guy Charles Fernley; Goodchild, Martin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns an apparatus for generation and ejection into air of discrete agglomerations of a particulate material with a proportion of liquid from a liquid having the particulate material therein. The apparatus defines an ejection location (128) and an electrical potential is applied to the ejection location to form an electric field at the location and liquid (122) , with the particulate material is supplied to the ejection location. An oscillating voltage (A) is applied to the ejection location the magnitude of , the voltage being below that required to cause ejection of particles from the ejection location, and an ejection voltage (B) is superimposed on the oscillating …
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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 22, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 22, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 22, 2019.
- 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.