US2808327A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of deoxidizing steel with aluminum base alloy
Assignee: U S Reduction Co
•
Filing: 1953-04-14
•
Granted: 1957-10-01
•
Expires: 1973-04-14
Abstract
No abstract record available.
Inventors
- 👤 Earl W Pierce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:24
CPC Classifications
C; C21; C21C; C21C7/00; C21C7/04; C21C7/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
42 words
THE METHOD OF DEOXIDIZING STEEL COMPRISING THE STEPS OF HEATING THE STEEL TO A MOLTEN STATE AND THEN ADDING TO THE MOLTEN STEEL A DEOXIDING ALLOY COMPRISING AT LEAST 80% ALUMINUM, ABOUT 3 TO 5% ZINC, AND ABOUT 1.75 TO 3% MAGNESIUM.
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) | 1960-09-30 | 1961-04-01 | 1961-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-30 | 1965-04-01 | 1965-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-30 | 1969-04-01 | 1969-10-01 | $7700.00 | Window Closed / Lapsed |