Mixer for mixing of liquids or suspensions and method for mixing
CA 2203696 C · Owner: Hillstrom, Anders · Inventors: Sjoberg, Peter; Hillstrom, Anders
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A mixer for liquid or suspensions comprises two mixing chambers (2 3) provided each with an outer inlet (10 12). The chambers are connected, to each other in such a way that the first chamber (2) leads to the second chamber (3). A number of mixing elements (6 7) are arranged on a rotating, axis (5) which is common for the two chambers. The mixing elements have different shapes in the two chambers. In the first chamber (2) the mixing elements are arranged to achieve a mixing by means of large shear forces. In the second chamber the mixing elements are arranged to achieve a mixing by stirring mainly without shear forces. A method for continuous mixing comprises mixing a little amount of a …
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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 October 23, 1995 and granted December 30, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 23, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 23, 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.