Patent US3149960A successfully refreshed from Google Patents.
US3149960A
Expired / Lapsed
US
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Aluminum degassing system
Assignee: Reynolds Metals Co
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Filing: 1960-11-02
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Granted: 1964-09-22
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Expires: 1980-11-02
Abstract
No abstract record available.
Inventors
- 👤 Jr Grover C Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:38
CPC Classifications
C; C22; C22B; C22B21/00; C22B21/06; C22B21/064
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
PROCESS FOR DEGASSING ALUMINUM AND ALUMINUM BASE ALLOYS WHICH COMPRISES PASSING THROUGH THE MOLTEN METAL A GASEOUS MIXTURE CONSISTING ESSENTIALLY OF CHLORINE AND CARBON MONOXIDE, THE PROPORTION OF CHLORINE BEING BETWEEN ABOUT 5% AND ABOUT 90% BY VOLUME, THE PROPORTION OF CARBON MONOXIDE BEING AT LEAST ABOUT 0.5% BY VOLUME.
Claim 2
Dependent Claim
50 words
PROCESS FOR DEGASSING ALUMINUM AND ALUMINUM BASE ALLOYS WHICH COMPRISES PASSING THROUGH THE MOLTEN METAL A GASEOUS MIXTURE CONSISTING ESSENTIALLY OF CHLORINE AND CARBON MONOXIDE, THE PROPORTION OF CHLORINE BEING BETWEEN ABOUT 5% AND ABOUT 90% BY VOLUME, THE PROPORTION OF CARBON MONOXIDE BEING AT LEAST ABOUT 0.5% BY VOLUME.
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) | 1967-09-22 | 1968-03-23 | 1968-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-22 | 1972-03-23 | 1972-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-22 | 1976-03-23 | 1976-09-22 | $7700.00 | Window Closed / Lapsed |