US2661284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Precipitation hardenable iron base alloy
Assignee: General Electric Co
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Filing: 1951-06-27
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Granted: 1953-12-01
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Expires: 1971-06-27
Abstract
No abstract record available.
Inventors
- 👤 James D Nisbet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:14
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/18; C22C38/40; C22C38/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
AN ALLOY CONSISTING ESSENTIALLY BY WEIGHT OF 15 TO 25% CHROMIUM, 25 TO 35% NICKEL, 2.4 TO 6% TITANIUM, 0.05 TO 0.75% CARBON, BALANCE IRON, SAID ALLOY BEING FREE OF OXYGEN AND NITROGEN IN THE COMBINED OR FREE STATE IN AMOUNTS EXCEEDING THE TOTAL OF 0.02%, CHARACTERIZED BY HAVING A 1500* F. STRESS RUPTURE LIFE OF MORE THAN 100 HOURS AT 15,000 P. S. I. STRESS AS CONTRASTED WITH A 1500* F. STRESS RUPTURE LIFE OF LESS THAN 25 HOURS FOR THE SAME ALLOY CONTAINING MORE THAN A TOTAL OF 0.02 PER CENT OF OXYGEN AND NITROGEN IN THE FREE OR COMBINED STATE.
Claim 2
Dependent Claim
103 words
AN ALLOY CONSISTING ESSENTIALLY BY WEIGHT OF 15 TO 25% CHROMIUM, 25 TO 35% NICKEL, 2.4 TO 6% TITANIUM, 0.05 TO 0.75% CARBON, BALANCE IRON, SAID ALLOY BEING FREE OF OXYGEN AND NITROGEN IN THE COMBINED OR FREE STATE IN AMOUNTS EXCEEDING THE TOTAL OF 0.02%, CHARACTERIZED BY HAVING A 1500* F. STRESS RUPTURE LIFE OF MORE THAN 100 HOURS AT 15,000 P. S. I. STRESS AS CONTRASTED WITH A 1500* F. STRESS RUPTURE LIFE OF LESS THAN 25 HOURS FOR THE SAME ALLOY CONTAINING MORE THAN A TOTAL OF 0.02 PER CENT OF OXYGEN AND NITROGEN IN THE FREE OR COMBINED STATE.
References Cited (Backward Citations)
US2048167A
Cited
US2564498A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-30 | 1957-06-01 | 1957-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-30 | 1961-06-01 | 1961-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-30 | 1965-06-01 | 1965-12-01 | $7700.00 | Window Closed / Lapsed |