US2653122A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fractional separation of oil with a complexing agent
Assignee: —
•
Filing: —
•
Granted: 1953-09-22
•
Expires: 1970-09-22
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:27
CPC Classifications
C; C10; C10G; C10G73/00; C10G73/02; C10G73/24; B; B01; B01D; B01D17/00; B01D17/02; B01D17/04; B01D17/047; C07; C07C; C07C275/00; C07C275/02; C07C335/00; C07C335/02; C10G21/00; C10G21/06; C10G21/12; C10G21/16; C10G33/00; C10G33/04; C10G2300/00; C10G2300/40; C10G2300/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
20 words
A CONTINUOUS METHOD OF TREATING HYDROCARBON OIL CONTAINING CONSTITUENTS WHICH FORM CRYSTALLINE COMPLEXES WITH AN ORGANIC COMPOUND HAVING THE STRUCTURE:
Claim 2
Dependent Claim
20 words
A CONTINUOUS METHOD OF TREATING HYDROCARBON OIL CONTAINING CONSTITUENTS WHICH FORM CRYSTALLINE COMPLEXES WITH AN ORGANIC COMPOUND HAVING THE STRUCTURE:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-21 | 1957-03-23 | 1957-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-21 | 1961-03-23 | 1961-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-21 | 1965-03-23 | 1965-09-22 | $7700.00 | Window Closed / Lapsed |