Electrostatic aerosol compositions
CA 2382524 C · Owner: Reckitt Benckiser (Uk) Limited · Inventors: Harper, Duncan Roger; Abela, Mario; Morgan, John Douglas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An electrically neutral composition in the form of a water-in-oil or an oil-inwater emulsion is imparted with a unipolar electrostatic charge on spraying from an aerosol spray device by incorporating into the composition at least one polar or ionic or aromatic or linearly conjugated compound. The amount of the polar or ionic or aromatic or linearly conjugated compound included in the composition is from 0.01 to 80% w/w based on a non-ionic surfactant also included in the composition, but is such that the theoretical conductivity of the emulsion is less than the bulk conductivity of the emulsion.
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 September 5, 2000 and granted April 19, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 5, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 5, 2022.
- 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.