US3256085A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of coating aluminum and adding same to molten steel
Assignee: United States Steel Corp
•
Filing: 1961-09-29
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Granted: 1966-06-14
•
Expires: 1981-09-29
Abstract
No abstract record available.
Inventors
- 👤 Samuel D Hitchings
- 👤 Jack T Marko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:05
CPC Classifications
C; C21; C21C; C21C7/00; C21C7/04; C21C7/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A METHOD OF INSURING DIFFUSION OF ALUMINUM SHOT, SLUGS, BARS AND THE LIKE INTRODUCED AS ADDITION AGENTS FOR MOLTEN STEEL COMPRISING THE STEPS OF PICKLING THE ALUMINUM UNTIL THE OXIDE COATING IS REMOVED, THEREAFTER RINSING OFF THE PICKLING AGENT, AND COATING THE ALUMINUM WITH A MATERIAL HAVING THE CHARACTERISTICS AT AMBIENT TEMPERATURE OF BEING ADHERENT TO THE ALUMINUM, IMPERVIOUS TO AIR, NON-DELIQUESCENT, AND AT THE TEMPERATURE OF MOLTEN STEEL BEING NON-ADHERENT TO THE ALUMINUM, AND ADDING THE PREPARED ALUMINUM TO THE MOLTEN STEEL.
Claim 2
Independent Claim
83 words
A METHOD OF INSURING DIFFUSION OF ALUMINUM SHOT, SLUGS, BARS AND THE LIKE INTRODUCED AS ADDITION AGENTS FOR MOLTEN STEEL COMPRISING THE STEPS OF PICKLING THE ALUMINUM UNTIL THE OXIDE COATING IS REMOVED, THEREAFTER RINSING OFF THE PICKLING AGENT, AND COATING THE ALUMINUM WITH A MATERIAL HAVING THE CHARACTERISTICS AT AMBIENT TEMPERATURE OF BEING ADHERENT TO THE ALUMINUM, IMPERVIOUS TO AIR, NON-DELIQUESCENT, AND AT THE TEMPERATURE OF MOLTEN STEEL BEING NON-ADHERENT TO THE ALUMINUM, AND ADDING THE PREPARED ALUMINUM TO THE MOLTEN STEEL.
References Cited (Backward Citations)
US2085802A
Cited
US2137988A
Cited
US2496074A
Cited
US2680081A
Cited
US2882154A
Cited
US2882153A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-13 | 1969-12-13 | 1970-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-13 | 1973-12-13 | 1974-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-13 | 1977-12-13 | 1978-06-14 | $7700.00 | Window Closed / Lapsed |