US3777006A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing zeolitic bodies having high strength characteristics
Assignee: WR Grace and Co Conn
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Filing: 1972-01-21
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Granted: 1973-12-04
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Expires: 1992-01-21
Abstract
Abstract A PROCESS FOR PREPARING ZEOLITIC BODIES HAVING A SIZE IN EXCESS OF 200 MICRONS, HIGH STRENGTH CARACTERISTICS AND EXCELLENT ADSORPTIVE PROPERTIES BY PREPARING CLAY BODIES IN THE DESIRED SIZE RANGE, TREATING THE CLAY BODIES IN A SODIUM SILICATE SOLUTION AND HEATING THE FORMED BODIES IN THE SOLUTION UNTIL CRYSTALLIZATION IN COMPLETE.
Inventors
- 👤 C Rundell
- 👤 Daniel C Mc
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:17
CPC Classifications
C; C01; C01B; C01B33/00; C01B33/20; C01B33/26; C01B33/28; C01B33/2807; C01B33/2815; B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/08; C01B33/2838; 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) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |