Patent US3082167A successfully refreshed from Google Patents.
US3082167A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for removing metals from petroleum with an aromatic sulfonic acid
Assignee: Gulf Research and Development Co
•
Filing: 1961-07-24
•
Granted: 1963-03-19
•
Expires: 1981-07-24
Abstract
No abstract record available.
Inventors
- 👤 John G Erdman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:17
CPC Classifications
C; C10; C10G; C10G17/00; C10G17/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A PROCESS FOR REMOVING A HEAVY METAL CONTAMINANT FROM A MINERAL OIL CONTAINING THE SAME COMPRISING CONTACTING THE CONTAMINATED OIL UNDER ANHYDROUS CONDITIONS IN THE LIQUID PHASE AT A TEMPERATURE OF ABOUT 100* TO ABOUT 250*C. WITH AN AROMATIC SULFONIC ACID WHICH IS LIQUID AT THE TREATING TEMPERATURE FOR A TIME AND IN AN AMOUNT SUFFICIENT TO FORM A COMPLEX BETWEEN THE AROMATIC SULFONIC ACID AND SAID CONTAMINANT, COOLING THE REACTION MASS TO EFFECT PRECIPITATION OF THE AROMATIC SULFONIC ACID-HEAVY METAL COMPLEX AND SEPARATING THE PRECIPITATED COMPLEX FROM THE REACTION MASS TO OBTAIN A MINERAL OIL OF REDUCED HEAVY METAL CONTENT.
Claim 2
Dependent Claim
101 words
A PROCESS FOR REMOVING A HEAVY METAL CONTAMINANT FROM A MINERAL OIL CONTAINING THE SAME COMPRISING CONTACTING THE CONTAMINATED OIL UNDER ANHYDROUS CONDITIONS IN THE LIQUID PHASE AT A TEMPERATURE OF ABOUT 100* TO ABOUT 250*C. WITH AN AROMATIC SULFONIC ACID WHICH IS LIQUID AT THE TREATING TEMPERATURE FOR A TIME AND IN AN AMOUNT SUFFICIENT TO FORM A COMPLEX BETWEEN THE AROMATIC SULFONIC ACID AND SAID CONTAMINANT, COOLING THE REACTION MASS TO EFFECT PRECIPITATION OF THE AROMATIC SULFONIC ACID-HEAVY METAL COMPLEX AND SEPARATING THE PRECIPITATED COMPLEX FROM THE REACTION MASS TO OBTAIN A MINERAL OIL OF REDUCED HEAVY METAL CONTENT.
References Cited (Backward Citations)
US2948675A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-03-18 | 1966-09-17 | 1967-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-18 | 1970-09-17 | 1971-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-18 | 1974-09-17 | 1975-03-19 | $7700.00 | Window Closed / Lapsed |