US2519362A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of reducing the concentration of silica in sodium aluminate solutions
Assignee: Individual
•
Filing: 1943-08-04
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Granted: 1950-08-22
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Expires: 1963-08-04
Abstract
No abstract record available.
Inventors
- 👤 Einar P Flint
- 👤 Shartsis Leo
- 👤 Lansing S Wells
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:30
CPC Classifications
C; C01; C01F; C01F7/00; C01F7/02; C01F7/04; C01F7/08; C01F7/46; C01F7/47
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
43 words
THE METHOD OF ACTIVATING DETERIORATED SODALITIC-SEEDING MATERIAL FOR USE IN DESILCIZING SODIUM ALUMINATE SOLUTIONS, WHICH CONSISTS IN BOILING THE SEEDING MATERIAL FOR A PERIOD OF ABOUT ONE TO TWO HOURS IN A STRONG SOLUTION OF THE SODIUM SALT COMPONENT OF THE SODALITIC MATERIAL.
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) | 1953-08-21 | 1954-02-20 | 1954-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-21 | 1958-02-20 | 1958-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-21 | 1962-02-20 | 1962-08-22 | $7700.00 | Window Closed / Lapsed |