US2839292A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refractory reservoir for aluminum
Assignee: Individual
•
Filing: 1954-08-09
•
Granted: 1958-06-17
•
Expires: 1974-08-09
Abstract
No abstract record available.
Inventors
- 👤 Harry T Bellamy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:58
CPC Classifications
C; C22; C22B; C22B21/00; C22B21/0084; C23; C23C; C23C2/00; C23C2/003; C23C2/0034; C23C2/0036; F; F27; F27B; F27B14/00; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/934; Y10S428/935; Y10S428/937; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12611; Y10T428/12618; Y10T428/12771; Y10T428/12806; Y10T428/12826
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
IN COMBINATION A REFRACTORY RESERVOIR FOR MOLTEN ALUMINUM AND A TUBE DISPOSED THEREIN BELOW THE NORMAL LEVEL OF THE MOLTEN ALUMINUM, SAID TUBE BEING MADE FROM A FERROUS METAL COATED WITH AN INTERMEDIATE LAYER OF MOLYBDENUM AND AN EXTERNAL LAYER OF CERAMIC COMPOSITION WHEREBY SAID TUBE IS PROTECTED FROM CORROSION BY MOLTEN ALUMINUM AND FROM OXIDATION.
Claim 2
Dependent Claim
56 words
IN COMBINATION A REFRACTORY RESERVOIR FOR MOLTEN ALUMINUM AND A TUBE DISPOSED THEREIN BELOW THE NORMAL LEVEL OF THE MOLTEN ALUMINUM, SAID TUBE BEING MADE FROM A FERROUS METAL COATED WITH AN INTERMEDIATE LAYER OF MOLYBDENUM AND AN EXTERNAL LAYER OF CERAMIC COMPOSITION WHEREBY SAID TUBE IS PROTECTED FROM CORROSION BY MOLTEN ALUMINUM AND FROM OXIDATION.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-16 | 1961-12-16 | 1962-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-16 | 1965-12-16 | 1966-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-16 | 1969-12-16 | 1970-06-17 | $7700.00 | Window Closed / Lapsed |