US2605237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silica-magnesia catalyst for hydrocarbon-oil conversion
Assignee: Standard Oil Co
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Filing: 1950-04-15
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Granted: 1952-07-29
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Expires: 1970-04-15
Abstract
No abstract record available.
Inventors
- 👤 Glenn M Webb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:25
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
IN A METHOD FOR PREPARING AN IMPROVED SILICA-MAGNESIA CATALYST OF STABLE ACTIVITY AND REGENERABILITY IN THE CONVERSION OF HYDROCARBON OILS, SAID CATALYST CONSISTING ESSENTIALLY OF A HOMOGENOUS, POROUS MIXTURE OF CATALYSTICALLY INACTIVE SILICA WITH BETWEEN ABOUT 10 AND 25 PERCENT BY WEIGHT MGO, DRY BASIS, IN THE FORM OF CATALYTICALLY ACTIVE MAGNESIUM SILICATE, THE STEPS WHICH COMPRISES INTIMATELY MIXING A MAGNESIA-AFFORDING SUBSTANCE WITH A REACTIVE FORM
Claim 2
Dependent Claim
66 words
IN A METHOD FOR PREPARING AN IMPROVED SILICA-MAGNESIA CATALYST OF STABLE ACTIVITY AND REGENERABILITY IN THE CONVERSION OF HYDROCARBON OILS, SAID CATALYST CONSISTING ESSENTIALLY OF A HOMOGENOUS, POROUS MIXTURE OF CATALYSTICALLY INACTIVE SILICA WITH BETWEEN ABOUT 10 AND 25 PERCENT BY WEIGHT MGO, DRY BASIS, IN THE FORM OF CATALYTICALLY ACTIVE MAGNESIUM SILICATE, THE STEPS WHICH COMPRISES INTIMATELY MIXING A MAGNESIA-AFFORDING SUBSTANCE WITH A REACTIVE FORM
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-29 | 1956-01-28 | 1956-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-29 | 1960-01-28 | 1960-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-29 | 1964-01-28 | 1964-07-29 | $7700.00 | Window Closed / Lapsed |