Atmospheres for extending life of wire mesh belts used in sintering powder metal components
CA 2177428 C · Owner: Bowe, Donald James · Inventors: Garg, Diwakar; Mitchell, David Lee, Jr.; Marsden, James Garfield
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention discloses novel nitrogen-hydrogen based atmospheres for sintering steel components in continuous furnaces with consistent quality and properties while prolonging the life of the wire mesh belts reducing maintenance costs, and, improving furnace productivity. Specifically it discloses the use of a controlled amount of an oxidizing agent such as moisture carbon dioxide, nitrous oxide, or mixtures thereof along with nitrogen-hydrogen atmospheres to (1) sinter steel components with consistent quality and properties, (2) prolong life of wire mesh belts (3) reduce, downtime and maintenance costs and (4) reduce the formation of soot in the furnace. The use of a controlled …
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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 May 27, 1996 and granted July 25, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 27, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 27, 2018.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.