Patent US2744822A successfully refreshed from Google Patents.
US2744822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copper base alloys
Assignee: General Electric Co
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Filing: 1951-07-09
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Granted: 1956-05-08
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Expires: 1971-07-09
Abstract
No abstract record available.
Inventors
- 👤 Jr James L Briggs
- 👤 Cyril H Hannon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:41
CPC Classifications
C; C22; C22C; C22C9/00; C22C9/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
AN ALLOY COMPOSED OF, APPROXIMATELY, 3.5 TO 5% NICKEL, 0.7 TO 2% SILICON, 0.3 TO 1% IRON, THE BALANCE ESSENTIALLY ALL COPPER, CHARACTERIZED BY A HIGH YIELD STRENGTH, AND BY A HIGH RESISTANCE TO FAILURE THEN SUBJECTED TO STRESS CORROSION AS EVIDENCE BY 3/8 INCH DIAMETER ROUND RODS OF CAST ALLOY HAVING 16 UNITED STATES STANDARD SCREW-THREADS PER INCH WITHSTANDING WITHOUT FAILURE A TORQUE LOAD OF AT LEAST 20 FOOT POUNDS WHILE IMMERSED FOR 15 MINUTES IN A 10% WATER SOLUTION OF MERCUROUS NITRATE AT ROOM TEMPERATURE.
Claim 2
Dependent Claim
87 words
AN ALLOY COMPOSED OF, APPROXIMATELY, 3.5 TO 5% NICKEL, 0.7 TO 2% SILICON, 0.3 TO 1% IRON, THE BALANCE ESSENTIALLY ALL COPPER, CHARACTERIZED BY A HIGH YIELD STRENGTH, AND BY A HIGH RESISTANCE TO FAILURE THEN SUBJECTED TO STRESS CORROSION AS EVIDENCE BY 3/8 INCH DIAMETER ROUND RODS OF CAST ALLOY HAVING 16 UNITED STATES STANDARD SCREW-THREADS PER INCH WITHSTANDING WITHOUT FAILURE A TORQUE LOAD OF AT LEAST 20 FOOT POUNDS WHILE IMMERSED FOR 15 MINUTES IN A 10% WATER SOLUTION OF MERCUROUS NITRATE AT ROOM TEMPERATURE.
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) | 1959-05-08 | 1959-11-07 | 1960-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-08 | 1963-11-07 | 1964-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-08 | 1967-11-07 | 1968-05-08 | $7700.00 | Window Closed / Lapsed |