US2844520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic cracking
Assignee: Tidewater Oil Co
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Filing: 1955-09-16
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Granted: 1958-07-22
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Expires: 1975-09-16
Abstract
No abstract record available.
Inventors
- 👤 Viland Clare Kenneth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:01
CPC Classifications
C; C10; C10G; C10G11/00; C07; C07C; C07C9/00; C07C9/14; C10G11/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
IN A PROCESS OF CATALYTIC CRACKING HYDROCARBON OIL WHEREIN A HYDROCARBON DISTILLATE HAVING A BOILING RANGE BETWEEN ABOUT 400* F., AND 1050* F. AND A NON-BASIC NITROGEN CONTENT NOT OVER ABOUT 0.1% BY WEIGHT, IS SUBJECTED TO CRACKING IN THE PRESENCE OF AN ACTIVE CRACKING CATALYST TO PRODUCE SUBSTANTIAL AMOUNTS OF GASOLINE COMPONENTS, THE IMPROVEMENT WHICH COMPRISES ADDING TO SAID DISTILLATE, PRIOR TO CONTACT WITH SAID CATALYST, A SUFFICIENT QUANTITY OF NON-BASIC ORGANIC NITROGEN COMPOUND TO INCREASE BY AT LEAST 0.1% THE NON-BASIC NITROGEN CONTENT OF THE DISTILLATE.
Claim 2
Dependent Claim
88 words
IN A PROCESS OF CATALYTIC CRACKING HYDROCARBON OIL WHEREIN A HYDROCARBON DISTILLATE HAVING A BOILING RANGE BETWEEN ABOUT 400* F., AND 1050* F. AND A NON-BASIC NITROGEN CONTENT NOT OVER ABOUT 0.1% BY WEIGHT, IS SUBJECTED TO CRACKING IN THE PRESENCE OF AN ACTIVE CRACKING CATALYST TO PRODUCE SUBSTANTIAL AMOUNTS OF GASOLINE COMPONENTS, THE IMPROVEMENT WHICH COMPRISES ADDING TO SAID DISTILLATE, PRIOR TO CONTACT WITH SAID CATALYST, A SUFFICIENT QUANTITY OF NON-BASIC ORGANIC NITROGEN COMPOUND TO INCREASE BY AT LEAST 0.1% THE NON-BASIC NITROGEN CONTENT OF THE DISTILLATE.
References Cited (Backward Citations)
US1890434A
Cited
US2352236A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-21 | 1962-01-20 | 1962-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-21 | 1966-01-20 | 1966-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-21 | 1970-01-20 | 1970-07-22 | $7700.00 | Window Closed / Lapsed |