US2848387A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of aromatic and nonaromatic hydrocarbons
Assignee: Gulf Research and Development Co
•
Filing: 1954-03-03
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Granted: 1958-08-19
•
Expires: 1974-03-03
Abstract
No abstract record available.
Inventors
- 👤 Edwin M Glazier
- 👤 James M Harrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:30
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/04; C07C7/05; C07C7/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
IN A PROCESS FOR THE SEPARATION OF AROMATIC HYDROCARBONS FROM NON-AROMATIC HYDROCARBONS IN A MIXTURE OF AROMATIC AND NON-AROMATIC HYDROCARBONS BY THE AZEOTROPIC DISTILLATION OF THE MIXTURE OF AROMATIC AND NON-AROMATIC HYDROCARBONS IN THE PRESENCE OF ACETONITRILE TO FORM A VOLATILE AZETROPE OF NON-AROMATIC HYDROCARBONS AND ACETONITRILE, AND A BOTTOMS PRODUCT COMPRISING AROMATIC HYDROCARBONS, A PROCESS FOR RECOVERING ACETONITRILE FROM THE NON-AROMATIC HYDROCARBONS COMPRISING EXTRACTING ACETONITRILE FROM THE NON-AROMATIC HYRDOCARBONS WITH WATER TO FORM AN EXTRACT OF WATER AND ACETONITRILE AND A RAFFINATE OF SUBSTANTIALLY ACETONITRILE-FREE NON-AROMATIC HYDROCARBONS, EXTRACTING ACETONITRILE FROM SAID EXTRACT WITH AROMATIC HYDROCARBONS, RECYCLING THE EXTRACT OF AROMATIC HYDROCARBONS AND ACETONITRILE TO THE AZEOTROPIC DISTILLATION STEP, AND RECYCLING THE RAFFINATE OF WATER FROM THE EXTRACTION WITH AROMATIC HYDROCARBONS TO THE STEP OF EXTRACTING ACETONITRILE NON-AROMATIC HYDROCARBONS.
Claim 2
Dependent Claim
129 words
IN A PROCESS FOR THE SEPARATION OF AROMATIC HYDROCARBONS FROM NON-AROMATIC HYDROCARBONS IN A MIXTURE OF AROMATIC AND NON-AROMATIC HYDROCARBONS BY THE AZEOTROPIC DISTILLATION OF THE MIXTURE OF AROMATIC AND NON-AROMATIC HYDROCARBONS IN THE PRESENCE OF ACETONITRILE TO FORM A VOLATILE AZETROPE OF NON-AROMATIC HYDROCARBONS AND ACETONITRILE, AND A BOTTOMS PRODUCT COMPRISING AROMATIC HYDROCARBONS, A PROCESS FOR RECOVERING ACETONITRILE FROM THE NON-AROMATIC HYDROCARBONS COMPRISING EXTRACTING ACETONITRILE FROM THE NON-AROMATIC HYRDOCARBONS WITH WATER TO FORM AN EXTRACT OF WATER AND ACETONITRILE AND A RAFFINATE OF SUBSTANTIALLY ACETONITRILE-FREE NON-AROMATIC HYDROCARBONS, EXTRACTING ACETONITRILE FROM SAID EXTRACT WITH AROMATIC HYDROCARBONS, RECYCLING THE EXTRACT OF AROMATIC HYDROCARBONS AND ACETONITRILE TO THE AZEOTROPIC DISTILLATION STEP, AND RECYCLING THE RAFFINATE OF WATER FROM THE EXTRACTION WITH AROMATIC HYDROCARBONS TO THE STEP OF EXTRACTING ACETONITRILE NON-AROMATIC HYDROCARBONS.
References Cited (Backward Citations)
US2305106A
Cited
US2444893A
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US2434322A
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GB593463A
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US2690417A
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US2568159A
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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) | 1961-08-18 | 1962-02-17 | 1962-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-18 | 1966-02-17 | 1966-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-18 | 1970-02-17 | 1970-08-19 | $7700.00 | Window Closed / Lapsed |