Anti-microbial dispenser
CA 2307478 A1 · Owner: Webb, Garth T. · Inventors: Webb, Garth T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In prior dispensers, liquid left in the spout communicating with the atmosphere, becomes contaminated and contaminates the dispensed liquid when subsequently dispensed. The present invention provides a liquid-dispensing device in which the, dispensed liquid is forced through a pressure release valve and in the course of, doing so is brought into contact with a metallo-releasing agent. Such a metallo-, releasing agent is selected from the group of boron chromium, manganese, iron, cobalt, nickel copper, zinc, rhodium, palladium, silver tin, platinum and , gold, and mixture and alloys of the foregoing.
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 May 3, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 3, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 3, 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.