Manual or pump assist fluid dispenser
CA 2432814 C · Owner: Ophardt, Heiner · Inventors: Ophardt, Heiner
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Liquid soap dispensers including a vacuum relief valve which comprises an enclosed chamber having an air inlet open to the atmosphere and a liquid inlet in , communication with liquid in the reservoir and in which the liquid inlet opens to the , chamber at a height below a height at which the air inlet opens to the chamber. The , vacuum relief valve permits relief of vacuum from the reservoir without moving parts or , valves. A chamber about an opening of an inverted container with an impeller within the , chamber which, on rotation dispenses fluid from the chamber.
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 19, 2003 and granted May 8, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 19, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 19, 2025.
- 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.