Patent US3686121A successfully refreshed from Google Patents.
US3686121A
Expired / Lapsed
US
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Hydrocarbon conversion catalyst
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1969-12-29
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Granted: 1972-08-22
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Expires: 1989-12-29
Abstract
Abstract IMPROVED HYDROCARBON CONVERSION CATALYST COMPRISES AT LEAST TWO CRYSTALLINE ALUMINOSILICATE ZEOLITES HAVING ESSENTIALLY THE SAME CRYSTAL STRUCTURES, BUT HAVING SUBSTANTIALLY DIFFERENT SIO2/AL2O3 MOLAR RATIOS. MIXTURES OF ZEOLITES X AND Y ARE PREFERRED, PARTICULARLY WHEN EMBEDDED IN A MATRIX INCLUDING CLAYS AND/OR SILICA-ALUMINA.
Inventors
- 👤 Charles N Kimberlin Jr
- 👤 Elroy M Gladrow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:05
CPC Classifications
C; C10; C10G; C10G35/00; C10G35/04; C10G35/06; C10G35/095; B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/80; C10G11/00; C10G11/02; C10G11/04; C10G11/05; C10G49/00; C10G49/02; C10G49/08; B01J2229/00; B01J2229/10; B01J2229/26; B01J2229/30; B01J2229/42; B01J29/08; B01J29/082; B01J29/084
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-22 | 1976-02-21 | 1976-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-22 | 1980-02-21 | 1980-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-22 | 1984-02-21 | 1984-08-22 | $7700.00 | Window Closed / Lapsed |