US3004292A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extrusion of silica-alumina hydrogel
Assignee: Pure Oil Co
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Filing: 1958-11-19
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Granted: 1961-10-17
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Expires: 1978-11-19
Abstract
No abstract record available.
Inventors
- 👤 Hillis O Folkins
- 👤 Kenneth E Lucas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:25
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/44; B01J21/00; B01J21/12; B01J37/00; B01J37/02; B01J37/03; Y; Y10; Y10S; Y10S425/00; Y10S425/101; Y10S502/00; Y10S502/514
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A METHOD OF PREPARING AN EXTRUDED CATALYST SUPPORT HAVING HIGH ISOMERIZATION ACTIVITY FROM A SILICA-ALUMINA HYDROGEL, CONTAINING 50-95% WT. SILICA ON A DRY-WEIGHT BASIS, AND WHICH HAS BEEN DRIED TO A WATER CONTENT OF 20-50% WT., BUT NEVER BELOW 20% WT., WHICH CONSISTS OF ADDING SUFFICIENT WATER, NOT LESS THAN ABOUT 5%, CONTAINING IN SOLUTION A METAL PROMOTER FOR THE CATALYST, TO
Claim 2
Independent Claim
62 words
A METHOD OF PREPARING AN EXTRUDED CATALYST SUPPORT HAVING HIGH ISOMERIZATION ACTIVITY FROM A SILICA-ALUMINA HYDROGEL, CONTAINING 50-95% WT. SILICA ON A DRY-WEIGHT BASIS, AND WHICH HAS BEEN DRIED TO A WATER CONTENT OF 20-50% WT., BUT NEVER BELOW 20% WT., WHICH CONSISTS OF ADDING SUFFICIENT WATER, NOT LESS THAN ABOUT 5%, CONTAINING IN SOLUTION A METAL PROMOTER FOR THE CATALYST, TO
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) | 1964-10-16 | 1965-04-17 | 1965-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-16 | 1969-04-17 | 1969-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-16 | 1973-04-17 | 1973-10-17 | $7700.00 | Window Closed / Lapsed |