US2914584A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aromatic recovery using hydrogen fluoride and copper fluoride
Assignee: Standard Oil Co
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Filing: 1958-06-23
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Granted: 1959-11-24
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Expires: 1978-06-23
Abstract
No abstract record available.
Inventors
- 👤 David A Mccaulay
- 👤 Arthur P Lien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:03
CPC Classifications
C; C10; C10G; C10G17/00; C10G17/02; C10G17/04; C10G17/07; C07; C07C; C07C7/00; C07C7/148; C07C7/152; C07C7/156
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
A PROCESS WHICH COMPRISE CONTACTING UNDER ESSENTIALLY ANYHYDROUS CONDITIONS, A FEED MIXTURE COMPRISING ESSENTIALLY AROMATIC HYDROCARBONS AND NON-AROMATIC HYROCARBONS WITH COPPER FLUORIDE AND LIQUID HF,SAID PER MOLE OF SAID AROMARTIC HYDROCARBON AND SAID COPPER FLOURIDE BEING PRESENT IN AN AMOUNT OF AT LEAST ABOUT 3 MOLES FULORIDE BEING PRESENT IN AN AMOUNTOF LEAST ON THE ORDER OF THAT THEORETICALLY NEEDED TO FORM A COMPLEX WITH SAID AROMATIC HYDROCARBONS, WHERE SAID HF AND SAID COPPER FLUORIDE AMOUNTS ARE CALCULATED IN EXCESS OF THAT AMOUNT NEEDED TO FORM A COMPLEX WITH COMPLEXIBLE ORGANO-SULFUR COMPOUNDS PRESENTS IN SAID FEED, TO FORM AN HF SOLUTION OF A COMPLEX CONTAINING AROMATIC HYDROCARBON AND COPPER FLUORIDE, SEPARATING A FRACTION COMPRISING NON-AROMATIC HYDROCARBONS FROM A FRACTION COMPRISING LIQUID HF AND DISSOLVED COMPLEX, AND RECOVERING AROMATIC HYDROCARBONS FROM SAID LIQUID HF FRACTION.
Claim 2
Dependent Claim
134 words
A PROCESS WHICH COMPRISE CONTACTING UNDER ESSENTIALLY ANYHYDROUS CONDITIONS, A FEED MIXTURE COMPRISING ESSENTIALLY AROMATIC HYDROCARBONS AND NON-AROMATIC HYROCARBONS WITH COPPER FLUORIDE AND LIQUID HF,SAID PER MOLE OF SAID AROMARTIC HYDROCARBON AND SAID COPPER FLOURIDE BEING PRESENT IN AN AMOUNT OF AT LEAST ABOUT 3 MOLES FULORIDE BEING PRESENT IN AN AMOUNTOF LEAST ON THE ORDER OF THAT THEORETICALLY NEEDED TO FORM A COMPLEX WITH SAID AROMATIC HYDROCARBONS, WHERE SAID HF AND SAID COPPER FLUORIDE AMOUNTS ARE CALCULATED IN EXCESS OF THAT AMOUNT NEEDED TO FORM A COMPLEX WITH COMPLEXIBLE ORGANO-SULFUR COMPOUNDS PRESENTS IN SAID FEED, TO FORM AN HF SOLUTION OF A COMPLEX CONTAINING AROMATIC HYDROCARBON AND COPPER FLUORIDE, SEPARATING A FRACTION COMPRISING NON-AROMATIC HYDROCARBONS FROM A FRACTION COMPRISING LIQUID HF AND DISSOLVED COMPLEX, AND RECOVERING AROMATIC HYDROCARBONS FROM SAID LIQUID HF FRACTION.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-23 | 1963-05-25 | 1963-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-23 | 1967-05-25 | 1967-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-23 | 1971-05-25 | 1971-11-24 | $7700.00 | Window Closed / Lapsed |