US2696433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of high nitrogen manganese alloy
Assignee: Armco Inc
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Filing: 1951-01-11
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Granted: 1954-12-07
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Expires: 1971-01-11
Abstract
No abstract record available.
Inventors
- 👤 Tanczyn Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:51
CPC Classifications
C; C21; C21C; C21C7/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
IN THE PRODUCTION OF STAINLESS STEEL CONTAINING 12% TO 30% CHROMIUM, UP TO 30% NICKEL, 3% TO 12% MANGANESE, .06% TO .60% NITROGEN, UP TO 9% MOLYBDENUM, AND REMAINDER SUBSTANTIALLY ALL IRON, THE ART WHICH INCLUDES PREPARING A BATH OF STAINLESS STEEL CONTAINING 12% TO 30% CHROMIUM, AND UP TO 30% NICKEL, AND ADDING THERETO A NITROGEN BEARING MANGANESE-CONTAINING METAL OR ALLOY COMPRISING APPROXIMATELY 75% TO 98% MANGANESE, 2% TO 5% NITROGEN AND THE REMAINDER IRON.
Claim 2
Dependent Claim
76 words
IN THE PRODUCTION OF STAINLESS STEEL CONTAINING 12% TO 30% CHROMIUM, UP TO 30% NICKEL, 3% TO 12% MANGANESE, .06% TO .60% NITROGEN, UP TO 9% MOLYBDENUM, AND REMAINDER SUBSTANTIALLY ALL IRON, THE ART WHICH INCLUDES PREPARING A BATH OF STAINLESS STEEL CONTAINING 12% TO 30% CHROMIUM, AND UP TO 30% NICKEL, AND ADDING THERETO A NITROGEN BEARING MANGANESE-CONTAINING METAL OR ALLOY COMPRISING APPROXIMATELY 75% TO 98% MANGANESE, 2% TO 5% NITROGEN AND THE REMAINDER 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) | 1957-12-06 | 1958-06-07 | 1958-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-06 | 1962-06-07 | 1962-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-06 | 1966-06-07 | 1966-12-07 | $7700.00 | Window Closed / Lapsed |