US2683675A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of treating metal with an aqueous slurry
Assignee: Individual
•
Filing: 1951-11-14
•
Granted: 1954-07-13
•
Expires: 1971-11-14
Abstract
No abstract record available.
Inventors
- 👤 Adolph W Machlet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:10
CPC Classifications
C; C23; C23C; C23C10/00; C23C10/28; C23C10/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
THE PROCESS OF IMPROVING THE PHYSICAL CHARACTERISTICS OF A METAL COMPRISING TREATING SAID METAL AT ROOM TEMPERATURE WITH AN AQUEOUS SLURRY OF RED MUD BY-PRODUCT OF ALUMINA FROM WHICH ALUMINUM HAS BEEN EXTRACTED AND WHICH SAID RED MUD HAD BEEN HEATED TO ABOUT 850* F. TO 1600* F. IN PRESENCE OF COMMINUTED CARBON DISPERSED THEREWITH.
Claim 2
Dependent Claim
55 words
THE PROCESS OF IMPROVING THE PHYSICAL CHARACTERISTICS OF A METAL COMPRISING TREATING SAID METAL AT ROOM TEMPERATURE WITH AN AQUEOUS SLURRY OF RED MUD BY-PRODUCT OF ALUMINA FROM WHICH ALUMINUM HAS BEEN EXTRACTED AND WHICH SAID RED MUD HAD BEEN HEATED TO ABOUT 850* F. TO 1600* F. IN PRESENCE OF COMMINUTED CARBON DISPERSED THEREWITH.
References Cited (Backward Citations)
US379438A
Cited
US1649386A
Cited
US2168638A
Cited
US2112931A
Cited
US2490975A
Cited
US2529344A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-12 | 1958-01-11 | 1958-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-12 | 1962-01-11 | 1962-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-12 | 1966-01-11 | 1966-07-13 | $7700.00 | Window Closed / Lapsed |