US3150079A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation by selective desorption of silica gel
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1960-07-13
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Granted: 1964-09-22
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Expires: 1980-07-13
Abstract
No abstract record available.
Inventors
- 👤 Norton H Berlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:23
CPC Classifications
C; C10; C10G; C10G25/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A PROCESS FOR SEPARATING ONE-RING AROMATIC FROM A SUBSTANTIALLY HYDROCARBON COMPOSITION CONTAINING PARAFFINS, NAPHTHENES, SINGLE RING AROMATICS AND CONDENSED RING AROMATICS, SAID PROCESS COMPRISING ADSORBING SAID HYDROCARBON COMPOSITION ON SILICA GEL; DESORBING SAID SILICA GEL WITH A PARAFFIN CAPABLE OF SELECTIVELY DESORBING SAID PARAFFINS AND NAPHTHENES; AND FURTHER DESORBING SAID GEL WITH AN ALIPHATIC MONOOLEFIN HAVING A TOTAL CARBON ATOM CONTENT WITHIN THE RANGE OF 5 TO 10 CARBON ATOMS AND CAPABLE OF SELECTIVELY DESORBING SAID SINGLE RING AROMATICS.
Claim 2
Dependent Claim
79 words
A PROCESS FOR SEPARATING ONE-RING AROMATIC FROM A SUBSTANTIALLY HYDROCARBON COMPOSITION CONTAINING PARAFFINS, NAPHTHENES, SINGLE RING AROMATICS AND CONDENSED RING AROMATICS, SAID PROCESS COMPRISING ADSORBING SAID HYDROCARBON COMPOSITION ON SILICA GEL; DESORBING SAID SILICA GEL WITH A PARAFFIN CAPABLE OF SELECTIVELY DESORBING SAID PARAFFINS AND NAPHTHENES; AND FURTHER DESORBING SAID GEL WITH AN ALIPHATIC MONOOLEFIN HAVING A TOTAL CARBON ATOM CONTENT WITHIN THE RANGE OF 5 TO 10 CARBON ATOMS AND CAPABLE OF SELECTIVELY DESORBING SAID SINGLE RING AROMATICS.
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) | 1967-09-22 | 1968-03-23 | 1968-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-22 | 1972-03-23 | 1972-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-22 | 1976-03-23 | 1976-09-22 | $7700.00 | Window Closed / Lapsed |