US3702312A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluoride-containing crystalline alumino-silicates
Assignee: Shell USA Inc
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Filing: 1970-10-05
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Granted: 1972-11-07
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Expires: 1990-10-05
Abstract
Abstract A NOVEL CRYSTALLINE ALUMINO-SILICATE CONTAINING FLUORINE INCORPORATED INTO THE CRYSTALLINE STRUCTURE IS PREPARED BY TREATING A DIVALENT ALKALINE EARTH METAL FORM OF THE ALUMINO-SILICATE SEQUIENTIALLY WITH A SEQUESTERING AGENT FOLLOWED BY TREATMENT WITH A SOLUTION OF ALUMINUM, FLUORIDE AND CHORIDE IONS. THE FLUORIDE-CONTAINING ALUMINO-SILICATES ARE HIGHLY ACTIVE AND STABLE HYDROCONVERSION CATALYSTS WHEN COMPSITED WITH A HYDROGENATIVE METAL COMPONENT.
Inventors
- 👤 William B Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:37
CPC Classifications
C; C10; C10G; C10G47/00; C10G47/02; C10G47/10; C10G47/12; C10G47/16; B; B01; B01J; B01J20/00; B01J20/02; B01J20/10; B01J20/16; B01J20/18; B01J20/186; B01J29/00; B01J29/04; B01J29/06; B01J29/08
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) | 1975-11-07 | 1976-05-08 | 1976-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-07 | 1980-05-08 | 1980-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-07 | 1984-05-08 | 1984-11-07 | $7700.00 | Window Closed / Lapsed |