Patent US2987394A successfully refreshed from Google Patents.
US2987394A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Iron-aluminum base alloys
Assignee: Individual
•
Filing: 1959-03-25
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Granted: 1961-06-06
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Expires: 1979-03-25
Abstract
No abstract record available.
Inventors
- 👤 John J Mueller
- 👤 Frank G Tate
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:13
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/06; C22C38/18; C22C38/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
AN IRON-ALUMINUM BASE ALLOY HAVING IMPROVED DUCTILITY COMPRISING BY WEIGHT ABOUT 4% TO 10% ALUMINUM, 2% TO 8% CHROMIUM, 1% TO 5% COLUMBIUM, AND 0.5% TO 3% ZIRCONIUM, REMAINDER IRON.
Claim 2
Dependent Claim
30 words
AN IRON-ALUMINUM BASE ALLOY HAVING IMPROVED DUCTILITY COMPRISING BY WEIGHT ABOUT 4% TO 10% ALUMINUM, 2% TO 8% CHROMIUM, 1% TO 5% COLUMBIUM, AND 0.5% TO 3% ZIRCONIUM, REMAINDER IRON.
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) | 1964-06-05 | 1964-12-05 | 1965-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-05 | 1968-12-05 | 1969-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-05 | 1972-12-05 | 1973-06-06 | $7700.00 | Window Closed / Lapsed |