Slag granulation
CA 2116328 C · Owner: Davy Mckee (Stockton) Limited · Inventors: Featherstone, Barry William; Macauley, Derek
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A granulator comprises a rotary atomiser (1) on to which the molten material to be granulated is poured in a stream. The rotation of the atomiser (1) causes the molten material to be ejected therefrom in the form of globules. No fluid jets are used to break up the molten material. The globules pass through an enclosure (6) and partially freeze to form granules which are collected in an annular trough (10). A gas is injected into the trough (10) to induce a circumferential movement of the granules within the trough towards at least one exit from the trough (10).
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 September 8, 1992 and granted November 16, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 8, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 8, 2014.
- 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.