Brewing apparatus for preparing foam, froth or crema under low pressure
CA 2554348 C · Owner: Chen, Yee Mau · Inventors: Chen, Yee Mau; Wong, Raymond Wai Ming
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention pertains to a brewing filter apparatus capable of preparing foam froth, or creme, particularly for coffee beverages under low pressure. The apparatus can operate at pressures below 15 bar and as low as 1-3 bar. The apparatus comprises a mesh cover coarse filter, fine filter, large O-ring coffee container, small O-ring, and foam maker having two opposing holes. The holes have a diameter in the range of 0.3 to 1 mm. The creme is created by the turbulent contacting of two opposing jets of coffee which enter the foam maker through the two opposing holes. To further increase agitation and the surface area for contact a stainless steel wire mesh may be situated in the center …
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 July 27, 2006 and granted May 6, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 27, 2026.
- 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.