Plant for heat treatment of lumpy material
CA 2186284 C · Owner: Olbye, Bendt · Inventors: MæRSK, BENT; Olbye, Bendt
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A description is given of, a plant for heat treatment of lumpy material, such as lime-, stone, other carbonate materials, cement raw materials, or, the like. The plant comprises a preheating zone (1), a burn-, ing zone (3) and connecting means (20) which connect the, material outlet (7) of the preheating zone to the material in-, let (13) of the burning zone. A separating device (21) is pro-, vided as a part of the connecting means (20) and consists of, a duct (21) through which a gas stream can be induced to, flow from below and upwards. So on entry into the separating, duct (21) at the top of the duct the preheated material will be, dispersed in the counterflowing gas stream, whereby the …
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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 June 1, 1995 and granted March 13, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 1, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 1, 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.