Electrostatic spray process and apparatus
CA 2018551 C · Owner: Thorne, Stephen J. · Inventors: Noakes, Timothy J.; Thorne, Stephen J.; Vachlas, Zafirios
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An electrostatic liquid spraying apparatus has a sprayhead comprising a pair of atomising edges extending side-by-side, liquid feed means to each of the atomising edges and a plurality of field intensifying electrodes extending lengthwise of the atomising edges. A pair of the field intensifying electrodes are associated with each atomising edge with one disposed on either side thereof and forwardly of the associated atomising edge. Electric power supply means impose a potential difference between said atomising edges and said electrodes. In order to achieve satisfactory spraying:, a) the spacing between the atomising edges is in the range, 20-300 mm. b) the spacing between each of the …
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 June 8, 1990 and granted March 28, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 8, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 8, 2012.
- 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.