Patent US2783144A successfully refreshed from Google Patents.
US2783144A
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US
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Hard facing alloy
Assignee: Crucible Steel Company of America
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Filing: 1954-12-15
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Granted: 1957-02-26
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Expires: 1974-12-15
Abstract
No abstract record available.
Inventors
- 👤 Payson Peter
- 👤 Jr Lloyd F Bowne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:13
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/30; B23K35/3033; B23K35/304; C; C22; C22C; C22C19/00; C22C19/03; C22C19/05; C22C19/051; C22C19/053
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A HARD FACING COMPOSITION CONSISTING ESSENTIALLY OF ABOUT: 1.5 TO 3.5% CARBON; 15 TO 35% CHROMIUM; 0.5 TO 3% VANADIUM; 1 TO 7.5% OF METAL OF THE GROUP CONSISTING OF TUNGSTEN AND MOLYBDENUM; UP TO 15% IRON; BALANCE SUBSTANTIALLY NICKEL, CHARACTERIZED IN HAVING A WEIGHT LOSS WHEN IMMERSED IN MOLTEN LED OXIDE AT 1675*F. FOR ONE HOUR, OF NOT TO EXCEED 0.25 GRAMS PER SQUARE INCH, AND IN HAVING AN IMPACT HARDNESS AT 1600* F. OF NOT UNDER 230 BRINELL.
Claim 2
Dependent Claim
80 words
A HARD FACING COMPOSITION CONSISTING ESSENTIALLY OF ABOUT: 1.5 TO 3.5% CARBON; 15 TO 35% CHROMIUM; 0.5 TO 3% VANADIUM; 1 TO 7.5% OF METAL OF THE GROUP CONSISTING OF TUNGSTEN AND MOLYBDENUM; UP TO 15% IRON; BALANCE SUBSTANTIALLY NICKEL, CHARACTERIZED IN HAVING A WEIGHT LOSS WHEN IMMERSED IN MOLTEN LED OXIDE AT 1675*F. FOR ONE HOUR, OF NOT TO EXCEED 0.25 GRAMS PER SQUARE INCH, AND IN HAVING AN IMPACT HARDNESS AT 1600* F. OF NOT UNDER 230 BRINELL.
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) | 1960-02-26 | 1960-08-27 | 1961-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-26 | 1964-08-27 | 1965-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-26 | 1968-08-27 | 1969-02-26 | $7700.00 | Window Closed / Lapsed |