Ladle for enhanced steel vacuum decarburization
CA 2273393 A1 · Owner: Mcmaster University · Inventors: Guo, Diancai; Irons, Gordon
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A ladle is equipped with properly positioned side and bottom injectors for enhanced steel, decarburization in a vacuum tank degasser. To facilitate the circulation of liquid steel in the tank, the bottom injectors are positioned in a common segment in order to create a single loop of, liquid flow. To enlarge the surface area exposed to vacuum and to increase , the active surface, area supplementary gas flow is provided by side injectors located at the upper sidewall. The, active surface area is enhanced by breaking bubbles released from side injectors.
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 May 31, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 31, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 31, 2021.
- 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.