US2630406A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of separating hydrocarbons
Assignee: Universal Oil Products Co
•
Filing: 1950-10-02
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Granted: 1953-03-03
•
Expires: 1970-10-02
Abstract
No abstract record available.
Inventors
- 👤 Carl B Linn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:33
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/04; C07C7/05; C07C7/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
33 words
A METHOD OF SEPARATING ETHYLBENZENE FROM A FRACTION COMPRISING ESSENTIALLY ETHYLBENZENE AND XYLENES WHICH COMPRISES MIXING SAID FRACTION WITH LIQUID BORON TRICHLORIDE, FRACTIONALLY DISTILLING THE RESULTANT MIXTURE, AND SEPARATELY COLLECTING THE DIFFERENT FRACTIONS.
Claim 2
Independent Claim
33 words
A METHOD OF SEPARATING ETHYLBENZENE FROM A FRACTION COMPRISING ESSENTIALLY ETHYLBENZENE AND XYLENES WHICH COMPRISES MIXING SAID FRACTION WITH LIQUID BORON TRICHLORIDE, FRACTIONALLY DISTILLING THE RESULTANT MIXTURE, AND SEPARATELY COLLECTING THE DIFFERENT FRACTIONS.
References Cited (Backward Citations)
US2521444A
Cited
US2528892A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-02 | 1956-09-01 | 1957-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-02 | 1960-09-01 | 1961-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-02 | 1964-09-01 | 1965-03-03 | $7700.00 | Window Closed / Lapsed |