Split-flow, vertical ammonia converter
CA 2440800 C · Owner: Kellogg Brown & Root, Inc. · Inventors: Blanchard, Kenneth L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A vertical, fixed-bed ammonia converter wherein a fixed-bed catalyst zone is configured into two mechanically separated catalyst volumes and two gas streams , that operate in parallel. The design maintains the ratio of gas flow to catalyst volume , so that there is no catalyst effectiveness penalty. The catalyst beds and gas flow paths , are configured so that gas flow is downward through each catalyst volume. Each fixed-bed catalyst zone in the present invention can hold the catalyst in an annular , space formed between two concentric shrouds arranged around a shell and tube heat , exchanger. The two catalyst beds associated with each zone are situated above one , another along 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 September 12, 2003 and granted June 7, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 12, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 12, 2025.
- 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.