Method and arrangement for hot repair of heatings trains of coke oven battery
CA 2026536 C · Owner: Uhde Gmbh · Inventors: Wahlfeld, Werner
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of hot repair heating trains of a coke oven battery includes brick laying of a heating train, warming a finished portion of a respective heating train during the brick laying to a temperature of approximately 250°C, directly after ending the brick laying heating a new heating train to a temperature of approximately 500°C performing the warming and heating by means of gaseous heat carrier, blowing the heat carrier into the heating trains and heating the heat carrier in a heat exchange with use of heat of hot parts of the coke oven battery.
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 28, 1990 and granted January 18, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 28, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 28, 2012.
- 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.