US3231368A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of molten iron
Assignee: Foseco International Ltd
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Filing: 1963-05-22
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Granted: 1966-01-25
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Expires: 1983-05-22
Abstract
No abstract record available.
Inventors
- 👤 Watson Albert Ralph
- 👤 Austin George Wesley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:24
CPC Classifications
C; C21; C21C; C21C1/00; C21C1/10; C21C1/105; C21C1/02; C21C1/025; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/933; Y10T; Y10T428/00; Y10T428/12; Y10T428/12007; Y10T428/12014; Y10T428/1216; Y10T428/12222; Y10T428/12493; Y10T428/12535; Y10T428/12542; Y10T428/12549
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
103 words
A PROCESS FOR PLACING A VESSEL IN CONDITION FOR THE TREATMENT OF MOLTEN IRON POURED INTO IT WHICH COMPRISES FIRING THE EXOTHERMIC LAYER OF A MULTILAYER PRODUCT WHICH COMPRISES, IN ORDER, A LAYER CONTAINING A DESULPHURISING AGENT FOR MOLTEN IRON, A LAYER OF HEAT-INSULATOR, AND A LAYER OF AN EXOTHERMIC COMPOSITION WHICH CONTAINS AN OXIDISABLE METAL, AN OXIDISING AGENT THEREFOR AND A SILICEOUS MATERIAL, THEREBY PRODUCING FROM SAID LAYER A HIGH MELTING POINT FLUID SLAG, CONTACTING THE SAID SLAG WITH THE INNER SURFACE OF THE VESSEL AND ALLOWING THE SLAG TO COOL, WHEREBY THE PRODUCT IS CEMENTED BY SAID SLAG TO SAID SURFACE.
Claim 2
Dependent Claim
103 words
A PROCESS FOR PLACING A VESSEL IN CONDITION FOR THE TREATMENT OF MOLTEN IRON POURED INTO IT WHICH COMPRISES FIRING THE EXOTHERMIC LAYER OF A MULTILAYER PRODUCT WHICH COMPRISES, IN ORDER, A LAYER CONTAINING A DESULPHURISING AGENT FOR MOLTEN IRON, A LAYER OF HEAT-INSULATOR, AND A LAYER OF AN EXOTHERMIC COMPOSITION WHICH CONTAINS AN OXIDISABLE METAL, AN OXIDISING AGENT THEREFOR AND A SILICEOUS MATERIAL, THEREBY PRODUCING FROM SAID LAYER A HIGH MELTING POINT FLUID SLAG, CONTACTING THE SAID SLAG WITH THE INNER SURFACE OF THE VESSEL AND ALLOWING THE SLAG TO COOL, WHEREBY THE PRODUCT IS CEMENTED BY SAID SLAG TO SAID SURFACE.
Claim 3
Dependent Claim
40 words
A MULTILAYER PRODUCT WHICH COMPRISES, IN ORDER A LAYER CONTAINING A DESULPHURISING AGENT FOR MOLTEN IRON, A LAYER OF HEAT-INSULATOR AND A LAYER OF AN EXOTHERMIC COMPOSITION WHICH CONTAINS AN OXIDISABLE METAL, AN OXIDISING AGENT THEREFOR AND A SILICEOUS MATERIAL.
Claim 4
Dependent Claim
40 words
A MULTILAYER PRODUCT WHICH COMPRISES, IN ORDER A LAYER CONTAINING A DESULPHURISING AGENT FOR MOLTEN IRON, A LAYER OF HEAT-INSULATOR AND A LAYER OF AN EXOTHERMIC COMPOSITION WHICH CONTAINS AN OXIDISABLE METAL, AN OXIDISING AGENT THEREFOR AND A SILICEOUS MATERIAL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |