US3305351A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of aluminum with aluminum fluoride particles
Assignee: Reynolds Metals Co
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Filing: 1964-02-24
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Granted: 1967-02-21
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Expires: 1984-02-24
Abstract
No abstract record available.
Inventors
- 👤 Linton D Bylund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:17
CPC Classifications
C; C22; C22B; C22B21/00; C22B21/06; C22B21/064; C22B21/066
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
49 words
METHOD FOR THE REMOVAL OF IMPURITIES IN THE FORM OF TRACE AMOUNTS OF METALS SELECTED FROM THE GROUP CONSISTING OF LITHIUM, SODIUM AND MAGNESIUM, FROM ALUMINOUS METAL CONTAINING SUCH IMPURITIES, WHICH COMPRISES PASSING THE ALUMINOUS METAL IN LIQUID FORM THROUGH A BED CONSISTING ESSENTIALLY OF SOLID ALUMINUM FLUORIDE PARTICLES.
Claim 2
Dependent Claim
49 words
METHOD FOR THE REMOVAL OF IMPURITIES IN THE FORM OF TRACE AMOUNTS OF METALS SELECTED FROM THE GROUP CONSISTING OF LITHIUM, SODIUM AND MAGNESIUM, FROM ALUMINOUS METAL CONTAINING SUCH IMPURITIES, WHICH COMPRISES PASSING THE ALUMINOUS METAL IN LIQUID FORM THROUGH A BED CONSISTING ESSENTIALLY OF SOLID ALUMINUM FLUORIDE PARTICLES.
Claim 3
Dependent Claim
62 words
MEANS TO REMOVE TRACE ELEMENTS FROM ALUMINOUS METAL, COMPRISING MEANS FORMING A CONDUIT FOR LIQUID ALUMINOUS METAL, A BED OF SOLID ALUMINUM FLUORIDE CONTAINING PARTICLES IN THE CONDUIT, AND MEANS EXTENDING ACROSS THE CONDUIT TO SUPPORT THE BED OF PARTICLES WHILE ALLOWING PASSAGE OF ALUMINOUS METAL THROUGH THE CONDUIT, MOST OF SAID PARTICLES HAVING AN ALUMIUM FLUORIDE EXTERIOR AND AN ALUMINA CORE.
Claim 4
Dependent Claim
62 words
MEANS TO REMOVE TRACE ELEMENTS FROM ALUMINOUS METAL, COMPRISING MEANS FORMING A CONDUIT FOR LIQUID ALUMINOUS METAL, A BED OF SOLID ALUMINUM FLUORIDE CONTAINING PARTICLES IN THE CONDUIT, AND MEANS EXTENDING ACROSS THE CONDUIT TO SUPPORT THE BED OF PARTICLES WHILE ALLOWING PASSAGE OF ALUMINOUS METAL THROUGH THE CONDUIT, MOST OF SAID PARTICLES HAVING AN ALUMIUM FLUORIDE EXTERIOR AND AN ALUMINA CORE.
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) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |