Device for generating and dispensing foam
CA 2189151 C · Owner: Eureka Development Ltd. · Inventors: Reidel, Hermann
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 generating and metering foam, especially foamed soap. To prevent further dispensing of drips of residual foam in the foam outlet channel (9) after the quantity required has been supplied,the device is constructed in such a way that the underpressure subsisting on the return stroke of a piston (10) in an air chamber (1) is effective in the foam outlet channel and sucks residual foam back.
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 April 24, 1995 and granted February 12, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 24, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 24, 2017.
- 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.