US3112176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Base-exchange zeolite and method for making the same
Assignee: Minerals and Chemicals Philipp Corp
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Filing: 1961-10-04
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Granted: 1963-11-26
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Expires: 1981-10-04
Abstract
No abstract record available.
Inventors
- 👤 Jr Walter L Haden
- 👤 Frank J Dzierzanowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:26
CPC Classifications
C; C01; C01B; C01B39/00; C01B39/02; C01B39/28
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
105 words
A METHOD FOR MAKING A BASE-EXCHANGE MATERIAL WHICH COMPRISES MIXING METAKAOLIN WITH AN AQUEOUS SOLUTION OF NAOH OF ABOUT 1% TO ABOUT 8% CONCENTRATION USING A QUANTITY OF SOLUTION SUFFICIENT TO PROVIDE AT LEAST 2 MOLS OF NAOH PER MOL OF METALKAOLINE AND REFLUXING SAID MIXTURE FOR A TIME SUFFICIENT TO COMPLETE REACTION BETWEEN SAID METAKAOLINE AND SAID NAOH, AND SEPARATING, WASHING AND DRYING PRECIPITATED REACTION PRODUCT, SAID REACTION PRODUCT BEING A HYDRATED SODIUM ALUMINUM SILICATE CONTAINING ABOUT 1 MOL AN2 O PER MOL AL2O3 AND ABOUT 2 MOLS SIO2 PER MOL AL2O3 AND BEING FURTHER CHARACTERIZED B Y POSSESSING THE FOLLOWIN X-RAY DIFFRACTION PATTERN:
References Cited (Backward Citations)
US3009776A
Cited
US2992068A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-11-25 | 1967-05-27 | 1967-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-25 | 1971-05-27 | 1971-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-25 | 1975-05-27 | 1975-11-26 | $7700.00 | Window Closed / Lapsed |