Spray pump package employing multiple orifices for dispensing liquid in different spray patterns with automatically adjusted optimized pump stroke for each pattern
CA 2129513 C · Owner: Merritt, Joyce R. · Inventors: Biard, Daniel G.; Drobish, James L.; Merritt, Joyce R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A spray pump package (10) capable of delivering two or more different predetermined spray patterns or spray characteristics through two or more different spray orifices (20 30) but at a liquid application, amount per unit of area being treated which is optimum for the particular spray orifice (20, 30) selected rather than a compromise between two extremes. The predetermined spray patterns from which the end user may select may differ by any desired spray pattern or characteristic including but not limited to: the cone angle of the spray; the width of the spray pattern; the average size of the particles in the spray; the amount of particle size deviation from the average; etc. The packages …
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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 28, 1993 and granted December 28, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 28, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 28, 2015.
- 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.