US2897136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic cracking process using a catalyst whose carbon factor has been improved
Assignee: Gulf Research and Development Co
•
Filing: 1953-12-29
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Granted: 1959-07-28
•
Expires: 1973-12-29
Abstract
No abstract record available.
Inventors
- 👤 William A Pardee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:56
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/02; C10G11/04; B; B01; B01J; B01J21/00; B01J21/16; B01J21/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A PROCESS FOR THE IMPROVEMENT OF THE CARBON FACTOR OF A CRACKING CATALYST WHICH HAS LOST SELECTIVELY THROUGH EXTENDED USE, SAID CRACKING CATALYST COMPRISING A CONPOSITE OF SILICA AND AN OXIDE OF A METAL SELECTED FROM THE GROUP CONSISTING OF ALUNINUM, BORON, ZIRCONIUM, BERYLLIUM, TITANIUM AND MIXTURES THEREOF, COMPRISING PASSING A GAS CONSISTING ESSENTIALLY OF VAPORS OF A CHLORIDE OF AT LEAST ONE OF SAID METALS OTHER THAN SILICON PRESENT IN THE CATALYST DERIVED FROM A SOURCE EXTERNAL OF THE CATALYST AT AN ELEVATED TEMPERATURE IN THE RANGE OF 200* TO 1200* F. IN CONTACT WITH THE CATALYST AND THEREAFTER PURGING THE CATALYST OF METAL CHLORIDES.
Claim 2
Dependent Claim
106 words
A PROCESS FOR THE IMPROVEMENT OF THE CARBON FACTOR OF A CRACKING CATALYST WHICH HAS LOST SELECTIVELY THROUGH EXTENDED USE, SAID CRACKING CATALYST COMPRISING A CONPOSITE OF SILICA AND AN OXIDE OF A METAL SELECTED FROM THE GROUP CONSISTING OF ALUNINUM, BORON, ZIRCONIUM, BERYLLIUM, TITANIUM AND MIXTURES THEREOF, COMPRISING PASSING A GAS CONSISTING ESSENTIALLY OF VAPORS OF A CHLORIDE OF AT LEAST ONE OF SAID METALS OTHER THAN SILICON PRESENT IN THE CATALYST DERIVED FROM A SOURCE EXTERNAL OF THE CATALYST AT AN ELEVATED TEMPERATURE IN THE RANGE OF 200* TO 1200* F. IN CONTACT WITH THE CATALYST AND THEREAFTER PURGING THE CATALYST OF METAL CHLORIDES.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-27 | 1963-01-26 | 1963-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-27 | 1967-01-26 | 1967-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-27 | 1971-01-26 | 1971-07-28 | $7700.00 | Window Closed / Lapsed |