Reduction of nitrogen oxides
CA 1295813 C · Owner: Atomic Energy Of Canada Limited - Energie Atomique Du Canada, Limitee · Inventors: Chuang, Karl T.; Fu, Long
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process is disclosed for reducing nitrogen oxides by passing them in admixture with ammonia or hydrogen over a group VIII metal catalyst on a porous hydrophobic support. The process is carried out at 0-200°C when hydrogen is used or 0-100°C when, ammonia is used. It is useful in pollution control for example, in reducing nitrogen oxide emissions in industrial waste gases.
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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
- Granted February 18, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 18, 2009.
- 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.