US2944890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminum bronze alloy having improved wear resistance by the addition of cobalt and chromium
Assignee: Ampco Metal Inc
•
Filing: 1958-01-22
•
Granted: 1960-07-12
•
Expires: 1978-01-22
Abstract
No abstract record available.
Inventors
- 👤 John F Klement
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:32
CPC Classifications
C; C22; C22C; C22C9/00; C22C9/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
AN ALUMINUM BRONZE ALLOY, CONSISTING ESSENTIALLY OF 3.0% TO 20.0% ALUMINUM, FROM 1.0% TO 8.0% IRON, FROM 0.50% TO 5.0% COBALT, FROM 0.5% TO 3.0% CHROMIUM AND THE BALANCE BEING SUBSTANTIALLY COPPER, SAID ALLOY BEING CHARACTERIZED BY HAVING EXCELLENT CORROSION RESISTANCE AND HAVING IMPROVED TOUGHNESS AND WEAR RESISTANCE.
Claim 2
Dependent Claim
48 words
AN ALUMINUM BRONZE ALLOY, CONSISTING ESSENTIALLY OF 3.0% TO 20.0% ALUMINUM, FROM 1.0% TO 8.0% IRON, FROM 0.50% TO 5.0% COBALT, FROM 0.5% TO 3.0% CHROMIUM AND THE BALANCE BEING SUBSTANTIALLY COPPER, SAID ALLOY BEING CHARACTERIZED BY HAVING EXCELLENT CORROSION RESISTANCE AND HAVING IMPROVED TOUGHNESS AND WEAR RESISTANCE.
References Cited (Backward Citations)
GB537404A
Cited
US2809139A
Cited
US2789900A
Cited
US2832709A
Cited
US2829971A
Cited
US2829972A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-12 | 1964-01-11 | 1964-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-12 | 1968-01-11 | 1968-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-12 | 1972-01-11 | 1972-07-12 | $7700.00 | Window Closed / Lapsed |