US2529346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the production of cast iron and alloy addition agent used in method
Assignee: Huntington Alloys Corp
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Filing: 1949-04-19
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Granted: 1950-11-07
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Expires: 1969-04-19
Abstract
No abstract record available.
Inventors
- 👤 Millis Keith Dwight
- 👤 Gagnebin Albert Paul
- 👤 Pilling Norman Boden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:00
CPC Classifications
C; C22; C22C; C22C37/00; C22C37/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
THE METHOD OF PRODUCING IMPROVED IRONBASE CASTINGS WHICH COMPRISES ESTABLISHING AN IRON-BASE MELT CONTAINING ABOUT 0.03% UP TO ABOUT 0.3% SULFUR, INCORPORATING IN SAID MELT ABOUT 0.25% TO ABOUT 2% OF AN AGENT CONTAINING AT LEAST ABOUT 1.25% BUT NOT MORE THAN ABOUT 4% CARBON, MORE THAN ABOUT 10% TO ABOUT 20% MAGNESIUM, WITH THE BALANCE ESSENTIALLY NICKEL, TO INTRODUCE IN SAID MELT AT LEAST ONE PART OF MAGNESIUM FOR EACH PART OF SULFUR CONTAINED IN SAID MELT AND TO PROVIDE A SMALL RETAINED MAGNESIUM CONTENT IN SAID MELT, AND SHORTLY THEREAFTER CASTING SAID MELT TO PRODUCE IRON-BASE CASTINGS HAVING IMPROVED PROPERTIES AND CONTAINING A SMALL AMOUNT OF MAGNESIUM, SAID SMALL AMOUNT BEING AT LEAST ABOUT 0.03% OF THE TOTAL COMPOSITION.
Claim 2
Independent Claim
121 words
THE METHOD OF PRODUCING IMPROVED IRONBASE CASTINGS WHICH COMPRISES ESTABLISHING AN IRON-BASE MELT CONTAINING ABOUT 0.03% UP TO ABOUT 0.3% SULFUR, INCORPORATING IN SAID MELT ABOUT 0.25% TO ABOUT 2% OF AN AGENT CONTAINING AT LEAST ABOUT 1.25% BUT NOT MORE THAN ABOUT 4% CARBON, MORE THAN ABOUT 10% TO ABOUT 20% MAGNESIUM, WITH THE BALANCE ESSENTIALLY NICKEL, TO INTRODUCE IN SAID MELT AT LEAST ONE PART OF MAGNESIUM FOR EACH PART OF SULFUR CONTAINED IN SAID MELT AND TO PROVIDE A SMALL RETAINED MAGNESIUM CONTENT IN SAID MELT, AND SHORTLY THEREAFTER CASTING SAID MELT TO PRODUCE IRON-BASE CASTINGS HAVING IMPROVED PROPERTIES AND CONTAINING A SMALL AMOUNT OF MAGNESIUM, SAID SMALL AMOUNT BEING AT LEAST ABOUT 0.03% OF THE TOTAL COMPOSITION.
References Cited (Backward Citations)
FR712076A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-06 | 1954-05-08 | 1954-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-06 | 1958-05-08 | 1958-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-06 | 1962-05-08 | 1962-11-07 | $7700.00 | Window Closed / Lapsed |