US2584894A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of fluoric effluents to
Assignee: —
•
Filing: —
•
Granted: 1952-02-05
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Expires: 1969-02-05
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:46
CPC Classifications
C; C01; C01F; C01F5/00; C01B; C01B7/00; C01B7/19; C01B7/191; C01B7/195; C01F11/00; C01F11/18; C01F11/20; C01F11/22; C02; C02F; C02F2101/00; C02F2101/10; C02F2101/12; C02F2101/14
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
43 words
A PROCESS FOR THE RECOVERY OF THE FLUORINE CONTENT OF FLUORIC EFFLUENTS GIVEN OFF DURING THE TREATMENT OF FLUORINE-CONTAINING MATERIALS WHICH PROCESS COMPRISES THE PASSING OF SAID FLUORIC EFFLUENTS IN CONTACT WITH A BED OF CRUSHED MINERAL MAGNESIUM SILICATE, THEREBY FORMING MAGNESIUM SILICOFLUORIDE.
Claim 2
Dependent Claim
43 words
A PROCESS FOR THE RECOVERY OF THE FLUORINE CONTENT OF FLUORIC EFFLUENTS GIVEN OFF DURING THE TREATMENT OF FLUORINE-CONTAINING MATERIALS WHICH PROCESS COMPRISES THE PASSING OF SAID FLUORIC EFFLUENTS IN CONTACT WITH A BED OF CRUSHED MINERAL MAGNESIUM SILICATE, THEREBY FORMING MAGNESIUM SILICOFLUORIDE.
Claim 3
Dependent Claim
24 words
A PROCESS AS DEFINED IN CLAIM 1, WHEREIN THE REACTED MINERAL MAGNESIUM SILICATE IS SUBJECTED TO DISTILLATION FROM SULPHURIC ACID TO EVOLVE HYDROFLUORIC ACID.
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) | 1955-02-04 | 1955-08-06 | 1956-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-04 | 1959-08-06 | 1960-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-04 | 1963-08-06 | 1964-02-05 | $7700.00 | Window Closed / Lapsed |