US2608525A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic cracking of hydrocarbons with a silica-alumina-zirconia composite
Assignee: Universal Oil Products Co
•
Filing: 1946-01-11
•
Granted: 1952-08-26
•
Expires: 1966-01-11
Abstract
No abstract record available.
Inventors
- 👤 Charles L Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:25
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/06; B01J21/066; B01J21/12; C; C10; C10G; C10G11/00; C10G11/02; C10G11/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
PROCESS OF PRODUCING GASOLINE FROM ORDINARILY LIQUID HYDROCARBON FRACTIONS COMPRISING CRACKING SUCH FRACTIONS IN THE PRESENCE OF A CATALYST PREPARED BY CALCINATION AT TEMPERATURE OF AT LEAST 700* F. OF A COMPOSITE OF SILICA, ALUMINA AND ZIRCONIA OBTAINED BY SUBJECTING A ZEOLITE TO MILD TREATMENT WITH ACID AND FREEING THE SAME OF ALKALI METAL, SAID ZEOLITE HAVING BEEN OBTAINED BY THE DRYING OF A MIXTURE OF HYDROUS OXIDES AND ALKALI METAL CATION.
Claim 2
Dependent Claim
72 words
PROCESS OF PRODUCING GASOLINE FROM ORDINARILY LIQUID HYDROCARBON FRACTIONS COMPRISING CRACKING SUCH FRACTIONS IN THE PRESENCE OF A CATALYST PREPARED BY CALCINATION AT TEMPERATURE OF AT LEAST 700* F. OF A COMPOSITE OF SILICA, ALUMINA AND ZIRCONIA OBTAINED BY SUBJECTING A ZEOLITE TO MILD TREATMENT WITH ACID AND FREEING THE SAME OF ALKALI METAL, SAID ZEOLITE HAVING BEEN OBTAINED BY THE DRYING OF A MIXTURE OF HYDROUS OXIDES AND ALKALI METAL CATION.
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) | 1955-08-26 | 1956-02-25 | 1956-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-26 | 1960-02-25 | 1960-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-26 | 1964-02-25 | 1964-08-26 | $7700.00 | Window Closed / Lapsed |