Patent US2650898A successfully refreshed from Google Patents.
US2650898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for removing asphaltenes from crude oil
Assignee: SINELAIR REFINING Co
•
Filing: 1951-10-27
•
Granted: 1953-09-01
•
Expires: 1971-10-27
Abstract
No abstract record available.
Inventors
- 👤 Everett N Case
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:42
CPC Classifications
C; C10; C10G; C10G21/00; C10G21/003; C10G17/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A METHOD FOR REMOVAL OF ASPHALTENES AND METAL CONTAMINANTS FROM CRUDE OIL PRIOR TO DESALTING AND CONVENTIONAL REFINING PROCEDURES WHICH COMPRISES SATURATING THE CRUDE AT A PRESSURE FROM 15 TO 200 POUNDS PER SQUARE INCH GAUGE WITH A PRECIPITATING AGENT CONSISTING OF GASEOUS HYDROGEN CHLORIDE AND SEPARATING THE AGENT AND PRECIPITATED MATTER FROM THE TREATED CRUDE.
Claim 2
Independent Claim
56 words
A METHOD FOR REMOVAL OF ASPHALTENES AND METAL CONTAMINANTS FROM CRUDE OIL PRIOR TO DESALTING AND CONVENTIONAL REFINING PROCEDURES WHICH COMPRISES SATURATING THE CRUDE AT A PRESSURE FROM 15 TO 200 POUNDS PER SQUARE INCH GAUGE WITH A PRECIPITATING AGENT CONSISTING OF GASEOUS HYDROGEN CHLORIDE AND SEPARATING THE AGENT AND PRECIPITATED MATTER FROM THE TREATED CRUDE.
References Cited (Backward Citations)
US2352236A
Cited
US2438874A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-31 | 1957-03-02 | 1957-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-31 | 1961-03-02 | 1961-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-31 | 1965-03-02 | 1965-09-01 | $7700.00 | Window Closed / Lapsed |