US3694348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the aromatization of hydrocarbons
Assignee: Individual
•
Filing: 1969-09-15
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Granted: 1972-09-26
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Expires: 1989-09-15
Abstract
Abstract AROMATIZATION OF HYDROCARBONS, SUCH AS STRAIGHT-RUN GASOLINE FRACTIONS, IS EFFECTED BY PASSING THE HYDROCARBONS AT A TEMPERATURE OF 400-550*C. AND A PRESSURE OF UP TO 20 ATM. OVER A PLATINUM ALUMINA CATALYST CONTAINING 0.1 TO 5% BY WEIGHT OF PALLADIUM AND 0.1 TO 5% BY WEIGHT OF AT LEAST ONE ELEMENT FROM THE SCANDIUM SUBGROUP OF GROUP III OR THE ZIRCONIUM SUBGROUP OF GROUP IV OF THE PERIODIC TABLE OF ELEMENTS. A MIXTURE OF AN ELEMENT FROM THE SCANDIUM SUB GROUP AND OF THE ZIRCONIUM SUBGROUP IS PARTICULARLY EFFECTIVE, E.G. CERIUM AND ZIRCONIUM.
Inventors
- 👤 Natalia Robertovna Bursian
- 👤 Samson Borisovich Kogan
- 👤 Zinaida Arkadievna Davydova
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:11
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/32; C07C5/373; C07C5/393; C07C5/41; C07C5/415; C07C5/417; C10; C10G; C10G35/00; C10G35/04; C10G35/06; C10G35/085; C10G35/09
Claims Analysis
Total Claims: 0
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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) | 1975-09-26 | 1976-03-27 | 1976-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-26 | 1980-03-27 | 1980-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-26 | 1984-03-27 | 1984-09-26 | $7700.00 | Window Closed / Lapsed |