US2900427A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of aromatics from paraffin hydrocarbons
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1956-09-28
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Granted: 1959-08-18
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Expires: 1976-09-28
Abstract
No abstract record available.
Inventors
- 👤 Prentiss S Viles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:20
CPC Classifications
C; C07; C07C; C07C2/00; C07C2521/00; C07C2521/02; C07C2521/04; C07C2523/00; C07C2523/70; C07C2523/76; C07C2523/84; C07C2523/85; C07C2523/88; C07C2523/882; Y; Y10; Y10S; Y10S585/00; Y10S585/949; Y10S585/951
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
A METHOD FOR FORMING AROMATIC HYDROCARBONS FROM PARAFFINIC HYDROCARBONS OF LOWER MOLECULAR WEIGHT WHICH COMPRISES FORMING A MIXTURE CONSISTING ESSENTIALLY OF A NORMALLY LIQUID PARAFFINIC HYDROCARBON HAVING A CHAIN LENGTH SUFFICIENT TO FORM AN AROMATIC RING AND HAVING A BOILING RANGE UP TO 750* F. AND SULFUR DIOXIDE IN AN AMOUNT WITHIN THE RANGE FROM ABOUT 0.5% TO ABOUT 50% BY WEIGHT OF THE MIXTURE, CONTACTING SAID MIXTURE WITH A CATALYST CONSISTING OF ALUMINA-SUPPORTED COBALT MOLYBDATE AT A PRESSURE FROM ABOUT 0 POUND ABSOLUTE TO ABOUT 1000 POUNDS PER SQUARE INCH GAUGE, AT A RATE FROM ABOUT 1 TO ABOUT 500 VOLUMES OF MIXTURE PER VOLUME OF CATALYST PER HOUR AND AT A TEMPERATURE WITHIN THE RANGE FROM ABOUT 800* F. TO ABOUT 1600* F. TO FORM A PRODUCT CONTAINING AROMATICS AND HEAVIER HYDROCARBONS, AND RECOVERING SAID PRODUCT.
Claim 2
Independent Claim
138 words
A METHOD FOR FORMING AROMATIC HYDROCARBONS FROM PARAFFINIC HYDROCARBONS OF LOWER MOLECULAR WEIGHT WHICH COMPRISES FORMING A MIXTURE CONSISTING ESSENTIALLY OF A NORMALLY LIQUID PARAFFINIC HYDROCARBON HAVING A CHAIN LENGTH SUFFICIENT TO FORM AN AROMATIC RING AND HAVING A BOILING RANGE UP TO 750* F. AND SULFUR DIOXIDE IN AN AMOUNT WITHIN THE RANGE FROM ABOUT 0.5% TO ABOUT 50% BY WEIGHT OF THE MIXTURE, CONTACTING SAID MIXTURE WITH A CATALYST CONSISTING OF ALUMINA-SUPPORTED COBALT MOLYBDATE AT A PRESSURE FROM ABOUT 0 POUND ABSOLUTE TO ABOUT 1000 POUNDS PER SQUARE INCH GAUGE, AT A RATE FROM ABOUT 1 TO ABOUT 500 VOLUMES OF MIXTURE PER VOLUME OF CATALYST PER HOUR AND AT A TEMPERATURE WITHIN THE RANGE FROM ABOUT 800* F. TO ABOUT 1600* F. TO FORM A PRODUCT CONTAINING AROMATICS AND HEAVIER HYDROCARBONS, AND RECOVERING SAID 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) | 1962-08-17 | 1963-02-16 | 1963-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-17 | 1967-02-16 | 1967-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-17 | 1971-02-16 | 1971-08-18 | $7700.00 | Window Closed / Lapsed |