US2826497A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Addition agent and method for making ferrous products
Assignee: Huntington Alloys Corp
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Filing: 1953-08-07
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Granted: 1958-03-11
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Expires: 1973-08-07
Abstract
No abstract record available.
Inventors
- 👤 Gagnebin Albert Paul
- 👤 Eash John Trimble
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:30
CPC Classifications
C; C22; C22C; C22C35/00; C22C28/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
THE METHOD FOR PRODUCING CAST IRON CONTAINING GRAPHITE IN A SPHERODIAL FORM WHICH COMPRISES ESTABLISHING A MOLTEN CAST IRON BATH HAVING SUCH A COMPOSITION AS TO BE GRAY CAST IRON IF CAST IN AN INOCULTED CONDITION, INTRODUCING INTO SAID BATH AN AGENT CONTAINING ABOUT 30% TO ABOUT 75% MAGNESIU, UP TO ABOUT 50% NICKEL, UP TO ABOUT 50% COPPER, UP TO ABOUT 30% IRON, UP TO ABOUT 10% MANGANESE, UP TO ABOUT 25% SILICON, UP TO ABOUT 15% CALCIUM AND ABOUT 4% TO ABOUT 25% NITROGEN, WITH THE NITROGEN BEING ABOUT 7% TO ABOUT 35% OF THE MAGNESIUM CONTENT, SAID AGENT BEING ADDED IN AN AMOUNT SUFFICIENT TO PROVIDE A RETAINED MAGNESIUM CONTENT OF ABOUT 0.0O% TO ABOUT 0.4% IN CASTINGS MADE FROM SAID BATH, AND CASTING METAL FROM THE THUS-TREATED BATH IN AN INOCULATED CONDITION TO PRODUCE CASTINGS CONTAINING GRAPHITE IN A SPHEROIDAL FORM.
Claim 2
Independent Claim
145 words
THE METHOD FOR PRODUCING CAST IRON CONTAINING GRAPHITE IN A SPHERODIAL FORM WHICH COMPRISES ESTABLISHING A MOLTEN CAST IRON BATH HAVING SUCH A COMPOSITION AS TO BE GRAY CAST IRON IF CAST IN AN INOCULTED CONDITION, INTRODUCING INTO SAID BATH AN AGENT CONTAINING ABOUT 30% TO ABOUT 75% MAGNESIU, UP TO ABOUT 50% NICKEL, UP TO ABOUT 50% COPPER, UP TO ABOUT 30% IRON, UP TO ABOUT 10% MANGANESE, UP TO ABOUT 25% SILICON, UP TO ABOUT 15% CALCIUM AND ABOUT 4% TO ABOUT 25% NITROGEN, WITH THE NITROGEN BEING ABOUT 7% TO ABOUT 35% OF THE MAGNESIUM CONTENT, SAID AGENT BEING ADDED IN AN AMOUNT SUFFICIENT TO PROVIDE A RETAINED MAGNESIUM CONTENT OF ABOUT 0.0O% TO ABOUT 0.4% IN CASTINGS MADE FROM SAID BATH, AND CASTING METAL FROM THE THUS-TREATED BATH IN AN INOCULATED CONDITION TO PRODUCE CASTINGS CONTAINING GRAPHITE IN A SPHEROIDAL FORM.
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) | 1961-03-10 | 1961-09-09 | 1962-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-10 | 1965-09-09 | 1966-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-10 | 1969-09-09 | 1970-03-11 | $7700.00 | Window Closed / Lapsed |