Reheater protection in a circulating fluidized bed steam generator
CA 2118367 C · Owner: Combustion Engineering, Inc. · Inventors: Wilhelm, Bruce W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The final reheater in a circulating fluidized bed combustion system which is located in a separate fluidized bed heat exchanger and which would be subjected to hot solids without any cooling after a blackout or turbine is cooled by bleeding a portion of the steam from the superheater outlet through a normally closed high pressure drop valve and into the final reheater. A valve downstream from the final reheater is also opened to permit flow.
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 October 18, 1994 and granted December 21, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 18, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 18, 2016.
- 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.