US2829968A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminum bronze alloy having improved resistance to intergranular oxidation by the addition of tin
Assignee: Ampco Metal Inc
•
Filing: 1956-07-05
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Granted: 1958-04-08
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Expires: 1976-07-05
Abstract
No abstract record available.
Inventors
- 👤 John F Klement
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:03
CPC Classifications
C; C22; C22C; C22C9/00; C22C9/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
AN ALUMINUM BRONZE ALLOY HAVING INCREASED RESISTANCE TO INTERGRANULAR OXIDATION WHEN SUBJECTED TO STRESS IN A HOT WATER OR STEAM ATMOSPHERE, CONSISTING ESSENTIALLY BY WEIGHT OF: ABOUT 5.0% TO 8.0% ALUMINUM; ABOUT 1.6% TO 2.9% IRON; TIN IN AW WEIGHT RATIO OF 1 PART TIN TO 11 TO 32 PARTS OF ALUMINUM; AND THE BALANCE SUBSTANTIALLY COPPER.
Claim 2
Dependent Claim
57 words
AN ALUMINUM BRONZE ALLOY HAVING INCREASED RESISTANCE TO INTERGRANULAR OXIDATION WHEN SUBJECTED TO STRESS IN A HOT WATER OR STEAM ATMOSPHERE, CONSISTING ESSENTIALLY BY WEIGHT OF: ABOUT 5.0% TO 8.0% ALUMINUM; ABOUT 1.6% TO 2.9% IRON; TIN IN AW WEIGHT RATIO OF 1 PART TIN TO 11 TO 32 PARTS OF ALUMINUM; AND THE BALANCE SUBSTANTIALLY COPPER.
References Cited (Backward Citations)
US2031315A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-07 | 1961-10-07 | 1962-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-07 | 1965-10-07 | 1966-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-07 | 1969-10-07 | 1970-04-08 | $7700.00 | Window Closed / Lapsed |