Patent US2842437A successfully refreshed from Google Patents.
US2842437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Austenitic nodular iron
Assignee: Pont a Mousson SA
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Filing: 1956-08-17
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Granted: 1958-07-08
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Expires: 1976-08-17
Abstract
No abstract record available.
Inventors
- 👤 Guenzi Eraldo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:55
CPC Classifications
C; C22; C22C; C22C37/00; C22C37/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
AN AUSTENITIC CAST IRON PRODUCED FROM MOLTEN IRON AND HAVING A HIGH RESISTANCE TO TRACTION, AND IN WHICH THE FREE CARBON IS PRESENT AT LEAST PARTLY IN THE SPHEROIDAL FORM, SAID CAST IRON COMPRISING 2.2% TO 3.3% TOTAL CARBON, 1% TO 3.3% SILICON, LESS THAN 0.5% PHOSPHORUS, LESS THAN 0.10% SULPHUR, 0.02% TO 0.10% MAGNESIUM, 10% TO 17% NICKEL, 0.8% TO 3% COPPER AND 2.5% TO 7% MANGANESE; SAID COPPER AND MANGANESE CONSTITUENTS BEING ADDED SIMULTANEOUSLY TO SAID MOLTEN IRON.
Claim 2
Dependent Claim
80 words
AN AUSTENITIC CAST IRON PRODUCED FROM MOLTEN IRON AND HAVING A HIGH RESISTANCE TO TRACTION, AND IN WHICH THE FREE CARBON IS PRESENT AT LEAST PARTLY IN THE SPHEROIDAL FORM, SAID CAST IRON COMPRISING 2.2% TO 3.3% TOTAL CARBON, 1% TO 3.3% SILICON, LESS THAN 0.5% PHOSPHORUS, LESS THAN 0.10% SULPHUR, 0.02% TO 0.10% MAGNESIUM, 10% TO 17% NICKEL, 0.8% TO 3% COPPER AND 2.5% TO 7% MANGANESE; SAID COPPER AND MANGANESE CONSTITUENTS BEING ADDED SIMULTANEOUSLY TO SAID MOLTEN IRON.
References Cited (Backward Citations)
US2485760A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-07 | 1962-01-06 | 1962-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-07 | 1966-01-06 | 1966-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-07 | 1970-01-06 | 1970-07-08 | $7700.00 | Window Closed / Lapsed |