US3769201A
Expired / Lapsed
US
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Plural stage reforming with a palladium catalyst in the initial stage
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1971-05-27
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Granted: 1973-10-30
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Expires: 1991-05-27
Abstract
Abstract A CATALYTIC REFORMING PROCESS WHEREIN NAPHTHA FEED STREAMS, BOILING FROM ABOUT 80 TO 450*F., AND COMPRISING NAPHTHENES, PARAFFINS AND AROMATICS, ARE CONTACTED, IN AN INITIAL REACTION ZONE, WITH A HYDROGEN CONTAINING GAS, IN THE PRESENCE OF A CATALYST COMPRISING PD, OR PD AND A GROUP I-B METAL SUPPORTED ON A REFRACTORY OXIDE, AND PASSED INTO A TAIL ZONE WHEREIN THE FEED STREAM IS AGAIN CONTACTED WITH A CATALYST AND THEREBY FURTHER REACTED TO PRODUCE A HIGH OCTANE NUMBER PRODUCT. IN A PREFERRED EMBODIMENT THE GROUP I-B METAL IS AU.
Inventors
- 👤 J Sinfelt
- 👤 A Barnett
- 👤 J Carter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:54
CPC Classifications
C; C10; C10G; C10G59/00; C10G59/02; B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/44; C10G35/00; C10G35/04; C10G35/06; C10G35/085; C10G35/09
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-29 | 1977-04-30 | 1977-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-29 | 1981-04-30 | 1981-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-29 | 1985-04-30 | 1985-10-30 | $7700.00 | Window Closed / Lapsed |