US2772220A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Feed stock for naphtha reforming
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1952-09-25
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Granted: 1956-11-27
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Expires: 1972-09-25
Abstract
No abstract record available.
Inventors
- 👤 James D Bushncll
- 👤 Robert L Berg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:18
CPC Classifications
C; C10; C10G; C10G35/00; C10G35/04; C10G35/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
THE PROCESS OF PREPARING A SUPERHEATED NAPHTHA VAPOR FEED CONSISTING ESSENTIALLY OF SATURATED HYDROCARBONS NOT SUSCEPTIBLE TO GUM FORMATION BELOW TEMPERATURES OF ABOUT 400* F. AND SUBSTANTIALLY FREE OF OLEFINIC CONSTITUENTS FOR A HYDROCARBON CONVERSION PROCESS WHICH COMPRISES ACCUMULATING IN STORAGE A BODY OF SAID NAPHTHA, ADDING TO SAID NAPHTHA ENTERING STORAGE AN AMOUNT OF GASOLINE OXIDATION INHIBITOR EQUIVALENT TO FROM ABOUT 0.1 TO 1.0 POUND PER 5,000 GALLONS OF LIQUID NAPHTHA, WITHDRAWING A NAPHTHA STREAM FROM SAID STORAGE, PREHEATING SAID NAPHTHA STREAM BY INDIRECT HEAT EXCHANGE TO A TEMPERATURE ABOVE ABOUT 350* F. AT WHICH AT LEAST PARTIAL VAPORIZATION TAKES PLACE WITH MINIMUM FOULING OF EXCHANGER SURFACES, SUBSEQUENTLY HEATING SAID STREAM FURTHER IN A SEPARATE HEATER TO PRODUCE A SUPERHEATED COMPLETELY VAPORIZED NAPHTHA STREAM, AND FEEDING SAID NAPHTHA VAPOR TO SAID HYDROCARBON CONVERSION PROCESS.
Claim 2
Dependent Claim
135 words
THE PROCESS OF PREPARING A SUPERHEATED NAPHTHA VAPOR FEED CONSISTING ESSENTIALLY OF SATURATED HYDROCARBONS NOT SUSCEPTIBLE TO GUM FORMATION BELOW TEMPERATURES OF ABOUT 400* F. AND SUBSTANTIALLY FREE OF OLEFINIC CONSTITUENTS FOR A HYDROCARBON CONVERSION PROCESS WHICH COMPRISES ACCUMULATING IN STORAGE A BODY OF SAID NAPHTHA, ADDING TO SAID NAPHTHA ENTERING STORAGE AN AMOUNT OF GASOLINE OXIDATION INHIBITOR EQUIVALENT TO FROM ABOUT 0.1 TO 1.0 POUND PER 5,000 GALLONS OF LIQUID NAPHTHA, WITHDRAWING A NAPHTHA STREAM FROM SAID STORAGE, PREHEATING SAID NAPHTHA STREAM BY INDIRECT HEAT EXCHANGE TO A TEMPERATURE ABOVE ABOUT 350* F. AT WHICH AT LEAST PARTIAL VAPORIZATION TAKES PLACE WITH MINIMUM FOULING OF EXCHANGER SURFACES, SUBSEQUENTLY HEATING SAID STREAM FURTHER IN A SEPARATE HEATER TO PRODUCE A SUPERHEATED COMPLETELY VAPORIZED NAPHTHA STREAM, AND FEEDING SAID NAPHTHA VAPOR TO SAID HYDROCARBON CONVERSION PROCESS.
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) | 1959-11-27 | 1960-05-28 | 1960-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-27 | 1964-05-28 | 1964-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-27 | 1968-05-28 | 1968-11-27 | $7700.00 | Window Closed / Lapsed |