US2902430A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removal of metal contaminants from catalytic cracking feed stocks with sulfuric acid
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1955-02-21
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Granted: 1959-09-01
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Expires: 1975-02-21
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles Newton Kimberlin
- 👤 Mattox William Judson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:25
CPC Classifications
C; C10; C10G; C10G17/00; C10G17/02; C10G17/04; C10G17/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A PROCESS FOR TREATING A HEAVY PETROLEUM OIL INCLUDING CONSTITUENTS BOILING ABOVE ABOUT 900*F. AND CONTAINING IRON, NICKEL AND VANADIUM CONTAMINANTS WHICH COMPRISES TREATING SAID OIL AT A TEMPERATURE IN THE RANGE BETWEEN ABOUT 50*F. AND ABOUT 300*F. WITH FROM ABOUT 5 TO ABOUT 50 POUNDS OF SULFURIC ACID PER BARREL, SAID ACID HAVING A CONCENTRATION OF FROM ABOUT 70 TO ABOUT 90%; REMOVING ACID SLUDGE AND RECOVERING TREATED
Claim 2
Dependent Claim
69 words
A PROCESS FOR TREATING A HEAVY PETROLEUM OIL INCLUDING CONSTITUENTS BOILING ABOVE ABOUT 900*F. AND CONTAINING IRON, NICKEL AND VANADIUM CONTAMINANTS WHICH COMPRISES TREATING SAID OIL AT A TEMPERATURE IN THE RANGE BETWEEN ABOUT 50*F. AND ABOUT 300*F. WITH FROM ABOUT 5 TO ABOUT 50 POUNDS OF SULFURIC ACID PER BARREL, SAID ACID HAVING A CONCENTRATION OF FROM ABOUT 70 TO ABOUT 90%; REMOVING ACID SLUDGE AND RECOVERING TREATED
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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) | 1962-08-31 | 1963-03-02 | 1963-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-31 | 1967-03-02 | 1967-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-31 | 1971-03-02 | 1971-09-01 | $7700.00 | Window Closed / Lapsed |