US2841471A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthesis of selective mineral sorbents
Assignee: Texaco Inc
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Filing: 1956-10-23
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Granted: 1958-07-01
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Expires: 1976-10-23
Abstract
No abstract record available.
Inventors
- 👤 Eugene E Sensel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:43
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/02; B01J20/10; B01J20/16; B01J20/18; C; C01; C01B; C01B33/00; C01B33/20; C01B33/26; C01B33/28; C01B33/2807; C01B33/2815; Y; Y10; Y10S; Y10S423/00; Y10S423/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A PROCESS OF FORMING SYNTHETIC CRYSTALLINE ZEOLITE CHARACTERIZED BY THE EMPIRICAL FORMULA NA2O-AL2O3 2SIO24-5H2O AND AN EFFECTIVE PORE SIZE OF 4 A UPON DEHYDRATION WHICH COMPRISES: MAINTAINING AN AQUEOUS MIXTURE OF AT LEAST ONE SODA-PROVIDING SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF SODIUM HYDROXIDE AND SODIUM ALUMINATE, AT LEAST ONE ALUMINA-PROVIDING SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF HYDROUS ALUMINA AND SODIUM ALUMINATE, AND AT LEAST ONE SILICAPROVIDING SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF HYDROUS SILICA AND FINELY-DIVIDED AMORPHOUS SILICA, SAID MIXTURE CONTAINING ESSENTIALLY STOICHIOMETRIC QUANTITIES OF ALUMINUM, SILICON, AND SODIUM FOR THE FORMULATION NA2O.AL2O3.2SIO2, AT TEMPERATURE OF 150*-325*F. AND AUTOGENEOUS PRESSURE FOR AT LEAST ABOUT 3 HOURS THEREAFTER RECOVERING SAID ZEOLITE AS THE RESULTING SOLID FRACTION.
Claim 2
Dependent Claim
118 words
A PROCESS OF FORMING SYNTHETIC CRYSTALLINE ZEOLITE CHARACTERIZED BY THE EMPIRICAL FORMULA NA2O-AL2O3 2SIO24-5H2O AND AN EFFECTIVE PORE SIZE OF 4 A UPON DEHYDRATION WHICH COMPRISES: MAINTAINING AN AQUEOUS MIXTURE OF AT LEAST ONE SODA-PROVIDING SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF SODIUM HYDROXIDE AND SODIUM ALUMINATE, AT LEAST ONE ALUMINA-PROVIDING SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF HYDROUS ALUMINA AND SODIUM ALUMINATE, AND AT LEAST ONE SILICAPROVIDING SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF HYDROUS SILICA AND FINELY-DIVIDED AMORPHOUS SILICA, SAID MIXTURE CONTAINING ESSENTIALLY STOICHIOMETRIC QUANTITIES OF ALUMINUM, SILICON, AND SODIUM FOR THE FORMULATION NA2O.AL2O3.2SIO2, AT TEMPERATURE OF 150*-325*F. AND AUTOGENEOUS PRESSURE FOR AT LEAST ABOUT 3 HOURS THEREAFTER RECOVERING SAID ZEOLITE AS THE RESULTING SOLID FRACTION.
References Cited (Backward Citations)
US1945838A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-30 | 1961-12-30 | 1962-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-30 | 1965-12-30 | 1966-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-30 | 1969-12-30 | 1970-07-01 | $7700.00 | Window Closed / Lapsed |