US2918511A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Isomerizing a c6 hydrocarbon fraction
Assignee: Texaco Inc
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Filing: 1958-05-09
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Granted: 1959-12-22
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Expires: 1978-05-09
Abstract
No abstract record available.
Inventors
- 👤 Norman D Carter
- 👤 Howard V Hess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:09
CPC Classifications
C; C10; C10G; C10G67/00; C10G67/02; C10G67/06; C07; C07C; C07C9/00; C07C9/14; C07C9/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
A METHOD OF TREATING A HYDROCARBON FRACTION CONTAINING A MAJOR AMOUNT OF C6 HYDROCARBONS WHICH COMPRISES SUBJECTING SAID FRACTION TO ISOMERIZATION TO YIELD AN ISOMATE, SUBJECTING AID ISOMATE TO FRACTIONATION TO SEPARATE THEREFROM SUBSTANTIALLY ALL OF THE 2,2-DIMETHYLBUTANE AND 2,3-DIMETHYLBUTANE IN SAID ISOMATE, SUBJECTING THE REMAINING ISOMATE TO CONTACT WITH AN ALUMINO-SILICATE MOLECULAR SIEVE ADSORBENT WHICH SELECTIVELY ADSORB STRAIGHT CHAIN HYDROCARBONS TO THE SUBSTANTIAL EXCLUSION OF NON-STRAIGHT CHAIN HYDROCARBONS TO SEPARATE N-HEXANE THEREFROM AND TO YIELD A TREATED EFFLUENT STANTIALLY FREE OF N-HEXANE,SUBJECTING SAID TREATED EFFLUENT TO FRACTIONATION TO SEPARATE THEREFROM A FRACTION CONSISTING ESSENTIALLY OF 2-METHYLPENTANE AND 3-METHYLPENTANE, EMPLOYING THE THUS-SEPARATED 2 -METHYLPENTANE AND 3-METHYLPENTANT TO DESORB THE ADSORBED N-HEXANE FROM SAID ADSORBENT AND RETURNING THE DESORPTION EFFLUENT RESULTING FROM THE DESORPTION OF N-HEXANE FROM THE ADSORBENT BY CONTACT WITH 2-METHYLPENTANE AND 3-METHYLPENTANE TO THE ISOMERIZATION REACTION IN ADMIXTURE WITH THE C6 HYDROCARBON FRACTION UNDERGOING TREATMENT.
Claim 2
Independent Claim
147 words
A METHOD OF TREATING A HYDROCARBON FRACTION CONTAINING A MAJOR AMOUNT OF C6 HYDROCARBONS WHICH COMPRISES SUBJECTING SAID FRACTION TO ISOMERIZATION TO YIELD AN ISOMATE, SUBJECTING AID ISOMATE TO FRACTIONATION TO SEPARATE THEREFROM SUBSTANTIALLY ALL OF THE 2,2-DIMETHYLBUTANE AND 2,3-DIMETHYLBUTANE IN SAID ISOMATE, SUBJECTING THE REMAINING ISOMATE TO CONTACT WITH AN ALUMINO-SILICATE MOLECULAR SIEVE ADSORBENT WHICH SELECTIVELY ADSORB STRAIGHT CHAIN HYDROCARBONS TO THE SUBSTANTIAL EXCLUSION OF NON-STRAIGHT CHAIN HYDROCARBONS TO SEPARATE N-HEXANE THEREFROM AND TO YIELD A TREATED EFFLUENT STANTIALLY FREE OF N-HEXANE,SUBJECTING SAID TREATED EFFLUENT TO FRACTIONATION TO SEPARATE THEREFROM A FRACTION CONSISTING ESSENTIALLY OF 2-METHYLPENTANE AND 3-METHYLPENTANE, EMPLOYING THE THUS-SEPARATED 2 -METHYLPENTANE AND 3-METHYLPENTANT TO DESORB THE ADSORBED N-HEXANE FROM SAID ADSORBENT AND RETURNING THE DESORPTION EFFLUENT RESULTING FROM THE DESORPTION OF N-HEXANE FROM THE ADSORBENT BY CONTACT WITH 2-METHYLPENTANE AND 3-METHYLPENTANE TO THE ISOMERIZATION REACTION IN ADMIXTURE WITH THE C6 HYDROCARBON FRACTION UNDERGOING TREATMENT.
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) | 1962-12-21 | 1963-06-22 | 1963-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-21 | 1967-06-22 | 1967-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-21 | 1971-06-22 | 1971-12-22 | $7700.00 | Window Closed / Lapsed |