US3640702A
Expired / Lapsed
US
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Method of improving the properties of a ferrous metal in the molten state
Assignee: KARINTHI
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Filing: 1969-09-23
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Granted: 1972-02-08
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Expires: 1989-09-23
Abstract
Abstract A halogenated compound is brought in liquid phase into contact with a porous device which on its opposite side contacts molten ferrous metal. The halogenated liquid is forced by gas pressure through the porous device and into the molten metal. The halogen may be used to remove unwanted elements from the metal. The nonhalogen part of the compound may combine with elements dissolved in the metal or may itself dissolve in the metal.
Inventors
- 👤 Pierre Karinthi
- 👤 Etienne Spire
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:37
CPC Classifications
C; C21; C21C; C21C1/00; B; B22; B22D; B22D1/00; B22D1/002; B22D1/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
A method as claimed in claim 1, said titanium chloride being titanium tetrachloride.
Claim 2
Independent Claim
96 words
A method for improving the properties of a ferrous metal, comprising establishing a bath of molten ferrous metal to be treated, contacting liquid titanium chloride with a face of a fluid-permeable wall another face of which contacts the molten ferrous metal bath and forcing said titanium chloride through said fluid-permeable wall into the bath, said bath containing an element fixing chlorine with more avidity than titanium in the conditions prevailing in the bath of the ferrous metal, said element being a member selected from the group consisting of aluminum, chromium, vanadium, alkali metal and alkaline-earth metal.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-02-07 | 1975-08-09 | 1976-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-07 | 1979-08-09 | 1980-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-07 | 1983-08-09 | 1984-02-08 | $7700.00 | Window Closed / Lapsed |