US2911285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of synthetic sodalite
Assignee: Gulf Research and Development Co
•
Filing: 1956-12-12
•
Granted: 1959-11-03
•
Expires: 1976-12-12
Abstract
No abstract record available.
Inventors
- 👤 James W Earley
- 👤 Ivan H Milne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:31
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/45; C04B41/50; C04B41/5022; C01; C01B; C01B33/00; C01B33/20; C01B33/26; C01B33/28; C01B33/2807; C01B33/2892; Y; Y10; Y10S; Y10S423/00; Y10S423/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
IN THE MANUFACTURE OF SYNTHETIC SODALITE, THE PROCESS WHICH COMPRISES: EXTRACTING AN AMORPHOUS CALCINED COMPOSITE OF UNDRIED HYDROUS SILICA AND ALUMINA GELS WITH A WEAK SOLUTION OF SODIUM HYDROXIDE AND THEREBY OBTAINING AN EXTRACT AND A CATALYST RESIDUE; SEPARATING THE SODIUM HYDROXIDE AND THE SAID EXTRACT FROM THE CATALYST RESIDUE; SUBJECTING THE SAID CATALYST RESIDUE FROM THE SAID EXTRACTION TO A SECOND EXTRACTION, THE SAID SECOND EXTRACTION BEING A TWO-STAGE EXTRACTION PERFORMED FIRST WITH A SUBSTANTIALLY SATURATED SOLUTION OF SODIUM HYDROXIDE AND THEN WITH A SODIUM HYDROXIDE SOLUTION HAVING A STRENGTH WITHIN THE APPROXIMATE RANGE OF 2 PERCENT TO 7 PERCENT; SEPARATING THE EXTRACT FROM THE SOLID RESIDUE OF THE LAST MENTIONED EXTRACTION AND WASHING THE SAID SOLID RESIDUE WITH WATER AND SO OBTAINING A CRYSTALLINE SYNTHETIC SODALITE.
Claim 2
Dependent Claim
128 words
IN THE MANUFACTURE OF SYNTHETIC SODALITE, THE PROCESS WHICH COMPRISES: EXTRACTING AN AMORPHOUS CALCINED COMPOSITE OF UNDRIED HYDROUS SILICA AND ALUMINA GELS WITH A WEAK SOLUTION OF SODIUM HYDROXIDE AND THEREBY OBTAINING AN EXTRACT AND A CATALYST RESIDUE; SEPARATING THE SODIUM HYDROXIDE AND THE SAID EXTRACT FROM THE CATALYST RESIDUE; SUBJECTING THE SAID CATALYST RESIDUE FROM THE SAID EXTRACTION TO A SECOND EXTRACTION, THE SAID SECOND EXTRACTION BEING A TWO-STAGE EXTRACTION PERFORMED FIRST WITH A SUBSTANTIALLY SATURATED SOLUTION OF SODIUM HYDROXIDE AND THEN WITH A SODIUM HYDROXIDE SOLUTION HAVING A STRENGTH WITHIN THE APPROXIMATE RANGE OF 2 PERCENT TO 7 PERCENT; SEPARATING THE EXTRACT FROM THE SOLID RESIDUE OF THE LAST MENTIONED EXTRACTION AND WASHING THE SAID SOLID RESIDUE WITH WATER AND SO OBTAINING A CRYSTALLINE SYNTHETIC SODALITE.
References Cited (Backward Citations)
US1757373A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-02 | 1963-05-04 | 1963-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-02 | 1967-05-04 | 1967-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-02 | 1971-05-04 | 1971-11-03 | $7700.00 | Window Closed / Lapsed |