US3336731A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Procedures for treating gaseous aluminum halide
Assignee: Alcan Research and Development Ltd
•
Filing: 1965-05-17
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Granted: 1967-08-22
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Expires: 1985-05-17
Abstract
No abstract record available.
Inventors
- 👤 Norman W F Phillips
- 👤 Southam Frederick William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:31
CPC Classifications
C; C22; C22B; C22B21/00; C22B21/0038; C22B21/0046; B; B01; B01J; B01J10/00; B01J10/005; C01; C01F; C01F7/00; C01F7/02; C01F7/48; C01F7/56; C01F7/62
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A METHOD OF TREATING A FLOW OF GAS CONSISTING ESSENTIALLY OF ALUMINUM NORMAL HALIDE AND AEROSOL IMPURITIES, COMPRISING ADVANCING SAID FLOW OF GAS CONTINUOUSLY INTO, THOUGH, AND OUT OF A CONFINED REGION WHILE MAINTAINING SAID NORMAL HALIDE CONTINUOUSLY IN GASEOUS STATE TO RECOVER SAID IMPURITIES, AND IN SAID CONFINED REGION BRINGING SAID FLOW OF GAS INTO EXTENDED SURFACE CONTACT WITH A MOLTEN SALT, SAID MOLTEN SALT BEING SUBSTANTIALLY NONVOLATILE AND NON-ABSORPTIVE TO SAID ALUMINUM NORMAAL HALIDE IN SAID CONFINED REGION, AND CONTROLLING THE CONCEN-
Claim 2
Independent Claim
84 words
A METHOD OF TREATING A FLOW OF GAS CONSISTING ESSENTIALLY OF ALUMINUM NORMAL HALIDE AND AEROSOL IMPURITIES, COMPRISING ADVANCING SAID FLOW OF GAS CONTINUOUSLY INTO, THOUGH, AND OUT OF A CONFINED REGION WHILE MAINTAINING SAID NORMAL HALIDE CONTINUOUSLY IN GASEOUS STATE TO RECOVER SAID IMPURITIES, AND IN SAID CONFINED REGION BRINGING SAID FLOW OF GAS INTO EXTENDED SURFACE CONTACT WITH A MOLTEN SALT, SAID MOLTEN SALT BEING SUBSTANTIALLY NONVOLATILE AND NON-ABSORPTIVE TO SAID ALUMINUM NORMAAL HALIDE IN SAID CONFINED REGION, AND CONTROLLING THE CONCEN-
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) | 1970-08-21 | 1971-02-20 | 1971-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-21 | 1975-02-20 | 1975-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-21 | 1979-02-20 | 1979-08-22 | $7700.00 | Window Closed / Lapsed |