Agitator and baffles for slurry mixing
CA 2014689 C · Owner: Phillippi, Max L. · Inventors: Reidenbach, Vincent G.; Phillippi, Max L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus for mixing a fluid includes a mixing tub having a substantially circular horizontal cross-sectional shape, and an agitator assembly associated with the mixing tub. The agitator assembly includes a drive shaft having upper and lower agitators attached thereto. The drive shaft is located within the tub and has a substantially vertically oriented axis of rotation. The lower agitator moves fluid generally downward through a radially inner cross-sectional area defined within a first radius swept by the lower agitator. The upper agitator moves fluid within the first radius generally radially outward as that fluid is moved generally downward by the lower agitator, and moves fluid …
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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 April 17, 1990 and granted July 26, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 17, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 17, 2012.
- 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.