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US2676141A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process fok
Assignee: —
•
Filing: —
•
Granted: 1954-04-20
•
Expires: 1971-04-20
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 02:36
CPC Classifications
C; C10; C10G; C10G73/00; C10G73/02; C10G73/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
IN A PROCESS FOR SEPARATING COMPLEX-FORMING HYDROCARBONS WHICH ARE PREDOMINANTLY NORMALLY ALIPHATIC IN NATURE FROM A HYDROCARBON MIXTURE BY CONTACT WITH UREA, THE STEPS WHICH COMPRISE DISPOSING WITHIN A CONTACTING ZONE A CONTACT MASS COMPRISING 5 TO 35 PER CENT UREA AND 65 TO 95 PER CENT SOLID ADSORBENT, PASSING SAID HYDROCARBON MIXTURE IN THE LIQUID PHASE IN CONTACT WITH SAID MASS IN THE PRESENCE OF AT LEAST A SMALL AMOUNT OF POLAR SOLVENT HAVING MUTUAL SOLUBILITY FOR UREA AND HYDROCARBONS AND SELECTED FROM THE GROUP CONSISTING OF WATER AND OXYGENATED HYDROCARBONS, EFFECTING SAID CONTACT AT A TEMPERATURE UP TO 180* F. WHEREBY THE COMPLEX-FORMING HYDROCARBON CONSTITUENTS OF SAID HYDROCARBON MIX-
Claim 2
Dependent Claim
111 words
IN A PROCESS FOR SEPARATING COMPLEX-FORMING HYDROCARBONS WHICH ARE PREDOMINANTLY NORMALLY ALIPHATIC IN NATURE FROM A HYDROCARBON MIXTURE BY CONTACT WITH UREA, THE STEPS WHICH COMPRISE DISPOSING WITHIN A CONTACTING ZONE A CONTACT MASS COMPRISING 5 TO 35 PER CENT UREA AND 65 TO 95 PER CENT SOLID ADSORBENT, PASSING SAID HYDROCARBON MIXTURE IN THE LIQUID PHASE IN CONTACT WITH SAID MASS IN THE PRESENCE OF AT LEAST A SMALL AMOUNT OF POLAR SOLVENT HAVING MUTUAL SOLUBILITY FOR UREA AND HYDROCARBONS AND SELECTED FROM THE GROUP CONSISTING OF WATER AND OXYGENATED HYDROCARBONS, EFFECTING SAID CONTACT AT A TEMPERATURE UP TO 180* F. WHEREBY THE COMPLEX-FORMING HYDROCARBON CONSTITUENTS OF SAID HYDROCARBON MIX-
References Cited (Backward Citations)
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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) | 1957-04-19 | 1957-10-19 | 1958-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-19 | 1961-10-19 | 1962-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-19 | 1965-10-19 | 1966-04-20 | $7700.00 | Window Closed / Lapsed |