US3095368A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for removing metallic contaminants from oils
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1957-07-31
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Granted: 1963-06-25
•
Expires: 1977-07-31
Abstract
No abstract record available.
Inventors
- 👤 Bieber Herman
- 👤 Harry M Hartzband
- 👤 Walter M Basch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:54
CPC Classifications
C; C10; C10G; C10G31/00; C10G31/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A PROCESS FOR SELECTIVELY REMOVING IRON, NICKEL AND VANADIUM PORHYRINS FROM AN ASPHALTIC PETROLEUM OIL BOILING ABOVE ABOUT 950*F. WHICH COMPRISES DEASPHALTING SAID OIL; CONTACTING SAID DEASPHALTED OIL WITH AQUEOUS HYDROCHLORIC ACID HAVING A CONCENTRATION BETWEEN ABOUT 3% AND ABOUT 37% TO COAGULATE METALLIC PORPHYRINS PRESENT IN SAID OIL; AND THEREAFTER SEPARATING SAID OIL, SAID ACID AND SAID COAGULATED PORPHYRINS.
Claim 2
Dependent Claim
60 words
A PROCESS FOR SELECTIVELY REMOVING IRON, NICKEL AND VANADIUM PORHYRINS FROM AN ASPHALTIC PETROLEUM OIL BOILING ABOVE ABOUT 950*F. WHICH COMPRISES DEASPHALTING SAID OIL; CONTACTING SAID DEASPHALTED OIL WITH AQUEOUS HYDROCHLORIC ACID HAVING A CONCENTRATION BETWEEN ABOUT 3% AND ABOUT 37% TO COAGULATE METALLIC PORPHYRINS PRESENT IN SAID OIL; AND THEREAFTER SEPARATING SAID OIL, SAID ACID AND SAID COAGULATED PORPHYRINS.
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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) | 1966-06-24 | 1966-12-24 | 1967-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-24 | 1970-12-24 | 1971-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-24 | 1974-12-24 | 1975-06-25 | $7700.00 | Window Closed / Lapsed |