Patent US3087808A successfully refreshed from Google Patents.
US3087808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for cleaning and degassing molten aluminum and aluminum alloys
Assignee: Chemetron Corp
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Filing: 1960-07-28
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Granted: 1963-04-30
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Expires: 1980-07-28
Abstract
No abstract record available.
Inventors
- 👤 Roy F Gottschalk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:44
CPC Classifications
C; C22; C22B; C22B9/00; C22B9/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A PROCESS FOR DEGASSING AND PURIFYING A LIGHT MOLTEN METAL BATH CONTAINING INCLUDED HYDROGEN GAS AND CONSISTING ESSENTIALLY OF ALUMINUM AND CONTAINING MINOR AMOUNTS OF MAGNESIUM COMPRISING INTORDUCING UNDER PRESSURE AND SUBSTANTIALLY AT THE BOTTOM OF THE BATH A GASEOUS MIXTURE CONSISTING ESSENTIALLY OF FROM ABOUT 3% TO ABOUT 10% BY VOLUME OF CHLORINE AND FROM ABOUT 97% TO ABOUT 90% BY VOLUME OF NITROGEN AND AGITATING SAID BATH WITH SAID GASEOUS MIXTURE THUS INTRODUCED TO FLUSH THE MELT OF INCLUDED HYDROGEN GAS AND TO PURIFY THE MELT OF IMPURITIES AND PROVIDED THAT THE AMOUNT OF MAGNESIUM REMOVED FRM THE BATH IS LIMITED TO ABOUT .02% BY WEIGHT.
Claim 2
Dependent Claim
108 words
A PROCESS FOR DEGASSING AND PURIFYING A LIGHT MOLTEN METAL BATH CONTAINING INCLUDED HYDROGEN GAS AND CONSISTING ESSENTIALLY OF ALUMINUM AND CONTAINING MINOR AMOUNTS OF MAGNESIUM COMPRISING INTORDUCING UNDER PRESSURE AND SUBSTANTIALLY AT THE BOTTOM OF THE BATH A GASEOUS MIXTURE CONSISTING ESSENTIALLY OF FROM ABOUT 3% TO ABOUT 10% BY VOLUME OF CHLORINE AND FROM ABOUT 97% TO ABOUT 90% BY VOLUME OF NITROGEN AND AGITATING SAID BATH WITH SAID GASEOUS MIXTURE THUS INTRODUCED TO FLUSH THE MELT OF INCLUDED HYDROGEN GAS AND TO PURIFY THE MELT OF IMPURITIES AND PROVIDED THAT THE AMOUNT OF MAGNESIUM REMOVED FRM THE BATH IS LIMITED TO ABOUT .02% BY WEIGHT.
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) | 1966-04-29 | 1966-10-29 | 1967-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-29 | 1970-10-29 | 1971-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-29 | 1974-10-29 | 1975-04-30 | $7700.00 | Window Closed / Lapsed |