Sieve apparatus and method for use of same
CA 2601166 C · Owner: Virdrill As · Inventors: Knutsen, Harald; Vasshus, Jan Kristian; Melhus, Trond
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention describes an apparatus and a method of screening a material containing a solid and fluid, where the material is placed on an upper side of a screen element (3, 5), the material at least being acted on by vibrations produced by at least one acoustic sound source (11) wherein the at , least one acoustic sound source (11) is arranged to transmit pressure waves to at least a portion of an underside of the screen element.
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 March 16, 2006 and granted July 7, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 16, 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.