US2805942A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alloy steel and articles thereof
Assignee: Crucible Steel Company of America
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Filing: 1953-11-05
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Granted: 1957-09-10
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Expires: 1973-11-05
Abstract
No abstract record available.
Inventors
- 👤 Payson Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:20
CPC Classifications
C; C21; C21D; C21D9/00; C21D9/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A RIDER SHEET FOR USE IN NORMALIZING FURNACES AND THE LIKE MADE OF A SUBSTANTIALLY AUSTENITIC AND SUBSTANTIALLY NICKEL FREE ALLOY STEEL HAVING A RELATIVELY HIGH RESISTANCE TO DEFORMATION UNDER STRESS AT HIGH TEMPERATURES AND HIGH RESISTANCE TO OXIDATION AT TEMPERATURES UP TO ABOUT 2100*F., SAID STEEL CONTAINING ABOUT: 21 TO 27% CHROMIUM; 9 TO 15% MANGANESE; 0.55 TO 0.8% CARBON AND 0.3 TO 0.5% NITROGEN, THE SUM OF CARBON AND NITROGEN BEING NOT LESS THAN ABOUT 0.92%; UP TO ABOUT 2.5% SOLICON; UP TO ABOUT 5% IN AGGREGATE OF AT LEAST ONE ELEMENT SELECTED FROM THE GROUP CONSISTING OF VANADIUM, TUNGSTEN, AND MOLYBDENUM WITH NO ONE OF THESE BEING OVER 2%; AND THE BALANCE SUBSTANTIALLY ALL IRON.
Claim 2
Dependent Claim
118 words
A RIDER SHEET FOR USE IN NORMALIZING FURNACES AND THE LIKE MADE OF A SUBSTANTIALLY AUSTENITIC AND SUBSTANTIALLY NICKEL FREE ALLOY STEEL HAVING A RELATIVELY HIGH RESISTANCE TO DEFORMATION UNDER STRESS AT HIGH TEMPERATURES AND HIGH RESISTANCE TO OXIDATION AT TEMPERATURES UP TO ABOUT 2100*F., SAID STEEL CONTAINING ABOUT: 21 TO 27% CHROMIUM; 9 TO 15% MANGANESE; 0.55 TO 0.8% CARBON AND 0.3 TO 0.5% NITROGEN, THE SUM OF CARBON AND NITROGEN BEING NOT LESS THAN ABOUT 0.92%; UP TO ABOUT 2.5% SOLICON; UP TO ABOUT 5% IN AGGREGATE OF AT LEAST ONE ELEMENT SELECTED FROM THE GROUP CONSISTING OF VANADIUM, TUNGSTEN, AND MOLYBDENUM WITH NO ONE OF THESE BEING OVER 2%; AND THE BALANCE SUBSTANTIALLY ALL IRON.
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) | 1960-09-09 | 1961-03-11 | 1961-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-09 | 1965-03-11 | 1965-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-09 | 1969-03-11 | 1969-09-10 | $7700.00 | Window Closed / Lapsed |