US3684742A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing a silica-alumina supported platinum group metal hydrocracking catalyst
Assignee: Universal Oil Products Co
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Filing: 1969-12-17
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Granted: 1972-08-15
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Expires: 1989-12-17
Abstract
Abstract A CATALYST COMPOSITION AND METHOD OF MANUFACTURE. THE CATALYST COMPOSITION COMPRISES A PLATINUM GROUP METALLIC COMPONENT ON A SILICA-ALUMINA CARRIER MATERIAL. THE CATALYST IS PREPARED TO COMPRISE A PLATINUM GROUP METALLIC COMPONENT DISPERSED ON THE CARRIER MATERIAL IN A CRYSTALLITE SIZE OF LESS THAN ABOUT 20 ANGSTROMS.
Inventors
- 👤 Ernest L Pollitzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:34
CPC Classifications
C; C10; C10G; C10G47/00; C10G47/02; C10G47/10; C10G47/12; C10G47/16; C10G47/18; B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J21/00; B01J21/12; B01J37/00; B01J37/02; B01J37/03
Claims Analysis
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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) | 1975-08-15 | 1976-02-14 | 1976-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-15 | 1980-02-14 | 1980-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-15 | 1984-02-14 | 1984-08-15 | $7700.00 | Window Closed / Lapsed |