US2744009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ni-cr hard facing alloys
Assignee: Crucible Steel Company of America
•
Filing: 1951-07-30
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Granted: 1956-05-01
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Expires: 1971-07-30
Abstract
No abstract record available.
Inventors
- 👤 Jr Lloyd F Bowne
- 👤 Payson Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:49
CPC Classifications
C; C22; C22C; C22C19/00; C22C19/03; C22C19/05; C22C19/051; C22C19/053; B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/30; B23K35/3033; B23K35/304
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A NICKEL BASE ALLOY CONTAINING ABOUT: 0.8 TO 1.8% CARBON, 1.3 TO 2.5% BORON, THE SUM OF CARBON AND BORON AGGREGATING AT LEAST 2.2%, 20 TO 27% CHROMIUM, UP TO 0.5% SILICON, UP TO 5% EACH OF COPPER AND IRON, UP TO 2% COBALT, UP TO 2% OF METAL OF THE GROUP, MOLYBDENUM AND TUNGSTEN, AND THE BALANCE SUBSTANTIALLY NICKEL, CHARACTERIZED IN HAVING A MELTING POINT UNDER 2150* F., A ROOM TEMPERATURE HARDNESS WITHIN THE RANGE OF ABOUT ROCKWELL "C" 32 TO 62, COMBINED WITH HIGH CORROSION RESISTANCE AND HIGH HARDNESS AT ELEVATED TEMPERATURES.
Claim 2
Dependent Claim
94 words
A NICKEL BASE ALLOY CONTAINING ABOUT: 0.8 TO 1.8% CARBON, 1.3 TO 2.5% BORON, THE SUM OF CARBON AND BORON AGGREGATING AT LEAST 2.2%, 20 TO 27% CHROMIUM, UP TO 0.5% SILICON, UP TO 5% EACH OF COPPER AND IRON, UP TO 2% COBALT, UP TO 2% OF METAL OF THE GROUP, MOLYBDENUM AND TUNGSTEN, AND THE BALANCE SUBSTANTIALLY NICKEL, CHARACTERIZED IN HAVING A MELTING POINT UNDER 2150* F., A ROOM TEMPERATURE HARDNESS WITHIN THE RANGE OF ABOUT ROCKWELL "C" 32 TO 62, COMBINED WITH HIGH CORROSION RESISTANCE AND HIGH HARDNESS AT ELEVATED TEMPERATURES.
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US2322507A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-01 | 1959-10-31 | 1960-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-01 | 1963-10-31 | 1964-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-01 | 1967-10-31 | 1968-05-01 | $7700.00 | Window Closed / Lapsed |