US2881068A
Expired / Lapsed
US
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Method of treating a ferrous melt with a porous sintered metal body impregnated with a treating agent
Assignee: Wargons AB
•
Filing: 1953-04-27
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Granted: 1959-04-07
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Expires: 1973-04-27
Abstract
No abstract record available.
Inventors
- 👤 Bergh Sven Sigvard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:02
CPC Classifications
C; C21; C21C; C21C1/00; C21C7/00; C21C7/0006; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/1216
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
87 words
THE METHOD OF TREATING A MOLTEN METAL SELECTED FROM THE GROUP CONSISTING OF IRON, PIG IRON, STEEL, FERRO ALLOYS, NICKEL AND NICKEL STEELS WHICH COMPRISES INTRODUCING INTO SAID MOLTEN METAL A POROUS SINTERED METAL BODY COMPRISING A METAL SELECTED FROM SAID GROUP, SAID POROUS BODY HAVING ITS PORES AT LEAST PARTIALLY FILLED WITH A TREATING AGENT HAVING A MELTING POINT BELOW THE TEMPERATURE OF SAID MOLTEN METAL AND COMPRISING A METAL SELECTED FROM THE GROUP CONSISTING OF THE ALKALI METALS THE ALKALINE EARTH METALS MAGNESIUM,ZINC AND LEAD.
References Cited (Backward Citations)
GB191329628A
Cited
US1555978A
Cited
US1506246A
Cited
US1902478A
Cited
US2485760A
Cited
US2527037A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-06 | 1962-10-06 | 1963-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-06 | 1966-10-06 | 1967-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-06 | 1970-10-06 | 1971-04-07 | $7700.00 | Window Closed / Lapsed |