US2637681A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fractional separation of wax from a hydrocarbon mixture using an organic complexing agent and a solvent
Assignee: Texaco Inc
•
Filing: 1948-12-09
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Granted: 1953-05-05
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Expires: 1968-12-09
Abstract
No abstract record available.
Inventors
- 👤 George B Arnold
- 👤 Howard V Hess
- 👤 William E Skelton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:15
CPC Classifications
C; C10; C10G; C10G73/00; C10G73/02; C10G73/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
19 words
A CONTINUOUS METHOD OF SEPARATING WAX FROM A HYDROCARBON MIXTURE BY TREATMENT WITH A WAX-COMPLEXING AGENT HAVING THE STRUCTURE
Claim 2
Dependent Claim
19 words
A CONTINUOUS METHOD OF SEPARATING WAX FROM A HYDROCARBON MIXTURE BY TREATMENT WITH A WAX-COMPLEXING AGENT 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) | 1956-05-04 | 1956-11-03 | 1957-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-04 | 1960-11-03 | 1961-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-04 | 1964-11-03 | 1965-05-05 | $7700.00 | Window Closed / Lapsed |