Simplified cleaning and filling device with a piston
CA 2569835 C · Owner: Weill, David · Inventors: Weill, David
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a device for delicate treatment within a closed chamber comprising a chamber connected to the closed chamber by means of a duct. The housing contains a piston (8) driven by a motor (9), with a layout permitting contact with an external fluid reservoir when said piston (8) is in a certain position within the chamber (1) such as to generate a sudden release of pressure. The device comprises an outlet valve which remains closed when the piston increases the volume of the chamber such as to generate the drop in pressure within the chambers.
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 9, 2005 and granted October 1, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 9, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.