Process for producing furnace atmospheres using noncryogenically generated nitrogen
CA 2111498 A1 · Owner: Garg, Diwakar · Inventors: Garg, Diwakar; Epting, Micheal J.; Stempo, Michael J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for producing low-cost furnace atmospheres suitable for annealing and heat treating ferrous and nonferrous metals and alloys brazing metals and ceramics, sealing glass to metal and sintering metal, and ceramic powders in a continuous furnace equipped with an ammonia dissociator from non-cryogenically produced nitrogen containing from 0.05 to 5.0% residual oxygen is presented. The disclosed process involves mixing non-cryogenically produced nitrogen with a pre-determined amount of a reducing gas such as hydrogen, ammonia a C, H, and O containing hydro-, carbon such as an alcohol an ether, etc. or a mixture thereof, passing the mixture through an ammonia dissociator and converting …
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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 December 15, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 15, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 15, 2015.
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Timeline
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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.