US3359068A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of crystalline zeolite particles
Assignee: Universal Oil Products Co
•
Filing: 1964-04-13
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Granted: 1967-12-19
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Expires: 1984-04-13
Abstract
No abstract record available.
Inventors
- 👤 Michalko Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:09
CPC Classifications
C; C01; C01B; C01B39/00; C01B39/02; B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; C01B33/00; C01B33/20; C01B33/26; C01B33/28; C01B33/2807; C01B33/2815; Y; Y10; Y10S; Y10S423/00; Y10S423/21; Y10S423/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A METHOD FOR PREPARING A SYNTHETIC CRYSTALLINE ZEOLITE PARTICLE OF SUBSTANTIALLY SPHERICAL SHAPE WHICH COMPRISES: PREPARING A SILICA SOL; DROPPING SAID SOL THROUGH A BATH OF FORMING OIL TO FORM A SPHERICAL SILICA PARTICLE; CALCINING SAID PARTICLE BY HEATING AT AN ELEVATED TEMPERATURE; BRINGING THE RESULTING CALCINED SPHERICAL PARTICLE INTO CONTACT WITH AN AQUEOUS TREATING SOLUTION CONTAINING ALKALI METAL ALUMINATE AND HAVING A PH GREATER THAN ABOUT 11; REACTING SAID PARTICLE WITH SAID TREATING SOLUTION WHILE SUBSTANTIALLY PRESERVING ITS SPHERICITY UNTIL IT IS SUBSTANTIALLY CONVERTED TO A CRYSTALLINE ZEOLITE OF APPROXIMATELY SAID SPHERICAL SHAPE; AND SEPARATING THE ZEOLITE PARTICLE FROM THE TREATING SOLUTION.
Claim 2
Independent Claim
103 words
A METHOD FOR PREPARING A SYNTHETIC CRYSTALLINE ZEOLITE PARTICLE OF SUBSTANTIALLY SPHERICAL SHAPE WHICH COMPRISES: PREPARING A SILICA SOL; DROPPING SAID SOL THROUGH A BATH OF FORMING OIL TO FORM A SPHERICAL SILICA PARTICLE; CALCINING SAID PARTICLE BY HEATING AT AN ELEVATED TEMPERATURE; BRINGING THE RESULTING CALCINED SPHERICAL PARTICLE INTO CONTACT WITH AN AQUEOUS TREATING SOLUTION CONTAINING ALKALI METAL ALUMINATE AND HAVING A PH GREATER THAN ABOUT 11; REACTING SAID PARTICLE WITH SAID TREATING SOLUTION WHILE SUBSTANTIALLY PRESERVING ITS SPHERICITY UNTIL IT IS SUBSTANTIALLY CONVERTED TO A CRYSTALLINE ZEOLITE OF APPROXIMATELY SAID SPHERICAL SHAPE; AND SEPARATING THE ZEOLITE PARTICLE FROM THE TREATING SOLUTION.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-18 | 1971-06-19 | 1971-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-18 | 1975-06-19 | 1975-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-18 | 1979-06-19 | 1979-12-19 | $7700.00 | Window Closed / Lapsed |