Method of restoring heating walls of coke oven battery
CA 2106131 C · Owner: Thyssenkrupp Technologies Ag · Inventors: Meyer, Gunter; Hippe, Werner; Reinke, Martin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Renovation of a heating wall, in particular a heating wall head of a coke oven battery includes starting with a vertical wall raising of a part to be renovated on a wall protective plate of the part abutting a new masonry exactly on the wall protective plate and arranging between the new masonry and the old masonry a vertically extending welding joint from a ceramic material.
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 14, 1993 and granted June 8, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 14, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 14, 2015.
- 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.