Agitator
CA 2040009 C · Owner: Wada, Makoto · Inventors: Nishimi, Haruyuki; Mishima, Mamoru; Kuratsu, Masafumi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is an agitator including an agitation shaft at the center of the agitator vessel, an agitator blade mounted on the agitation shaft and consisting of a flat-plate-shaped blade disposed along the inner surface of the bottom wall of the agitator vessel and a grating-shaped blade continuous with the flat-plate-shaped blade, a baffle plate vertically extending for rotation around the agitator blade along the inner surface of the side wall of the agitator vessel and drive, equipment for rotating the baffle plate and the agitator blade independently from each other. When the agitator blade and the baffle plate are rotated at different speeds circulating, flow is formed in the vessel. The …
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 8, 1991 and granted September 7, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 8, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 8, 2013.
- 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.