Patent US4519919A successfully refreshed from Google Patents.
Patent US2984693A successfully refreshed from Google Patents.
US2984693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Defluorination of reaction products
Assignee: Phillips Petroleum Co
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Filing: 1959-08-28
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Granted: 1961-05-16
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Expires: 1979-08-28
Abstract
No abstract record available.
Inventors
- 👤 John T Cabbage
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:31
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/04; C07C9/00; C07C9/14; C07C9/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
IN A PROCESS FOR THE CONVERSION OF HYDROCARBONS IN THE PRESENCE OF A HYDROFLUORIC ACID CATALYST, WHEREIN LIQUID HYDROCARBON FROM SUCH A CONVERSION ARE PASSED TO A FRACTIONAL DISTILLATION ZONE TO SEPARATE A VAPOROUS FRACTION COMPRISING HYDROGEN FLUORIDE AND LOW-BOILING HYDROCARBONS FROM A LIQUID HYDROCARBON FRACTION CONTAINING DISSOLVED ORGANIC FLUORIDE COMPOUNDS, THE STEP OF WITHDRAWING A MAJOR PORTION OF SAID LIQUID HYDROCARBON FRACTION FROM THE LOWER SECTION OF SAID DISTILLATION ZONE AND PASSING IT TO A FIRST DEFLUORINATION ZONE, PASSING VAPOROUS EFFLUENT FROM THE LATTER DIRECTLY BACK TO SAID LOWER SECTION OF SAID DISTILLATION ZONE, PASSING A MINOR PORTION OF SAID LIQUID HYDROCARBON FRACTION TO A SECOND DEFLUORINATION ZONE DISPOSED IN SAID DISTILLATION ZONE BELOW SAID LOWER SECTION, SAID MINOR PORTION BEING THE SOLE STREAM CHARGED TO SAID SECOND DEFLUORINTION ZONE, AND WITHDRAWING THE RESULTING DEFLUORINATED HYDROCARBON FRACTION FROM SAID SECOND DEFLUORINATION ZONE AS NET DEFLUORINATED PRODUCT.
Claim 2
Dependent Claim
147 words
IN A PROCESS FOR THE CONVERSION OF HYDROCARBONS IN THE PRESENCE OF A HYDROFLUORIC ACID CATALYST, WHEREIN LIQUID HYDROCARBON FROM SUCH A CONVERSION ARE PASSED TO A FRACTIONAL DISTILLATION ZONE TO SEPARATE A VAPOROUS FRACTION COMPRISING HYDROGEN FLUORIDE AND LOW-BOILING HYDROCARBONS FROM A LIQUID HYDROCARBON FRACTION CONTAINING DISSOLVED ORGANIC FLUORIDE COMPOUNDS, THE STEP OF WITHDRAWING A MAJOR PORTION OF SAID LIQUID HYDROCARBON FRACTION FROM THE LOWER SECTION OF SAID DISTILLATION ZONE AND PASSING IT TO A FIRST DEFLUORINATION ZONE, PASSING VAPOROUS EFFLUENT FROM THE LATTER DIRECTLY BACK TO SAID LOWER SECTION OF SAID DISTILLATION ZONE, PASSING A MINOR PORTION OF SAID LIQUID HYDROCARBON FRACTION TO A SECOND DEFLUORINATION ZONE DISPOSED IN SAID DISTILLATION ZONE BELOW SAID LOWER SECTION, SAID MINOR PORTION BEING THE SOLE STREAM CHARGED TO SAID SECOND DEFLUORINTION ZONE, AND WITHDRAWING THE RESULTING DEFLUORINATED HYDROCARBON FRACTION FROM SAID SECOND DEFLUORINATION ZONE AS NET DEFLUORINATED PRODUCT.
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) | 1964-05-15 | 1964-11-14 | 1965-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-15 | 1968-11-14 | 1969-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-15 | 1972-11-14 | 1973-05-16 | $7700.00 | Window Closed / Lapsed |