US3260680A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic alumina, silica-alumina hydrocarbon cracking catalyst and method for hydrocarbon cracking
Assignee: Sinclair Research Inc
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Filing: 1963-11-04
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Granted: 1966-07-12
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Expires: 1983-11-04
Abstract
No abstract record available.
Inventors
- 👤 Robert A Sanford
- 👤 Erickson Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:22
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/12; B01J21/16; B01J21/20; C; C10; C10G; C10G11/00; C10G11/02; C10G11/04; Y; Y10; Y10S; Y10S502/00; Y10S502/50; Y10S502/501
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
83 words
A HYDROCARBON CRACKING CATALYST COMPOSITE CHARACTERIZED BY INCREASED RESISTANCE TO THE POISONING EFFECT OF NICKEL CONTAINING ABOUT 40 TO 55% TOTAL ALUMINA IN THE COMPOSITE AND CONSISTING ESSENTIALLY OF ABOUT 75 TO 91% OF SYNTHETIC SILICA-ALUMINA PARTICLES CONTAINING ABOUT 25 TO 35% ALUMINA, THE BALANCE BEING ESSENTIALLY SILICA, MIXED WITH ABOUT 9 TO 25% ALUMINA SELECTED FROM THE GROUP CONSISTING OF AMORPHOUS HYDRPUS ALUMINA PARTICLES AND BOEHMITE OF ABOUT 25 TO 40 A. CRYSTALLITE SIZE, SAID CATALYST CONTAINING LESS THAN ABOUT 0.5% SULFATE.
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) | 1969-07-11 | 1970-01-10 | 1970-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-11 | 1974-01-10 | 1974-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-11 | 1978-01-10 | 1978-07-12 | $7700.00 | Window Closed / Lapsed |