US3594121A
Expired / Lapsed
US
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Dry gel process for preparing zeolite y
Assignee: Union Carbide Corp
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Filing: 1969-03-10
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Granted: 1971-07-20
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Expires: 1989-03-10
Abstract
Abstract PROCESS FOR PREPARING ZEOLITE Y USING REACTION MIXTURE GELS CONTAINING VERY LOW MOLE PERCENTAGES OF WATER AND SILICA TO THE EXTENT THEY CONTAIN SO LITTLE WATER THAT THEY GIVE THE APPEARANCE OF VIRTUALLY DRY TO SLIGHTLY MOIST POWDERS. THESE GELS PERMIT THE USE OF APPARATUS SUCH AS IS CONVENTIONALLY USED IN DRY SOLIDS HANDLING.
Inventors
- 👤 Willis W Weber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:30
CPC Classifications
C; C01; C01B; C01B33/00; C01B33/20; C01B33/26; C01B33/28; C01B33/2807; C01B33/2838; C01B33/2853; Y; Y10; Y10S; Y10S423/00; Y10S423/21
Claims Analysis
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References Cited (Backward Citations)
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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) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |