Process for dephosphorizing molten pig iron
CA 1075012 A · Owner: Sumitomo Metal Industries, Ltd. · Inventors: Matsuo, Tohru; Okazaki, Takashi; Sasaki, Kantaro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for dephosphorizing molten pig iron by adding (a) line C???? slag and/or iron oxide (b) iron oxide and/or oxidizing gas, and if necessary (c) fluor???? and/or soda ash to the molten pig iron stored in a treating vessel in order to adjust the amount of CaO to correspond to at least 0.3 times the sum of the amounts of SiO and P2O5 and to adjust the amount of T.Fe to 15 to 50% in the slag composition after trestment, thereby obtaining a hig dephosphorisation.
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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
- Granted April 8, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 8, 1997.
- 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.