US3708281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Structural alloy steel containing copper and other alloy elements
Assignee: Amsted Industries Inc
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Filing: 1969-01-21
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Granted: 1973-01-02
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Expires: 1989-01-21
Abstract
Abstract THIS INVENTION COMPRISES AN ALLOY SYSTEM FABRICATION FOR PRODUCING USEFUL STEEL ARTICLES EXHIBITING TENSILE STRENGTH ON THE ORDER OF 150,000 P.S.I. WITH USEFUL DUCTILITY ON THE ORDER OF 1% TO 21/2% TENSILE ELONGATION. THE ALLOY SYSTEM ENTAILS SUITABLE METALLURGICAL COMBINATIONS OF IRON, CARBON, COPPER, MANGANESE, NICKEL, TIN AND MINOR ELEMENTS COMBINED THROUGH A PROCESS OF COPPER LIQUEFICA- TION AND HIGH TEMPERATURE CAPILLARY INFILTRATION. FERROUS CONSTITUENTS IN THE ALLOY GROUP ARE FABRICATED USING METAL POWDERS AND POWER METALLURGY TECHNIQUES ENTIRELY. CUPROUS MEMBERS OF THIS ALLOY SYSTEM CAN BE EITHER AS POWDERED COMPONENTS OR AS CAST OR WROUGHT COMPONENTS.
Inventors
- 👤 E Andreotti
- 👤 S Mcgee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:32
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/16; C22C33/00; C22C33/02; C22C33/0242
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-02 | 1976-07-03 | 1977-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-02 | 1980-07-03 | 1981-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-02 | 1984-07-03 | 1985-01-02 | $7700.00 | Window Closed / Lapsed |