US3573199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acidity control for a reforming process
Assignee: Chevron USA Inc
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Filing: 1969-06-16
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Granted: 1971-03-30
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Expires: 1989-06-16
Abstract
Abstract THE HALIDE CONTENT OF A PLATINUM CONTAINING CATALYST IS ADJUSTED DURING A REFORMING PROCESS WITHOUT DISCONTINUANCE OF CONTACT OF THE FEED WITH THE CATALYST BY (1) ADJUSTING THE TEMPERATURE TO WITHIN THE RANGE OF 675 TO 725*F.; (2) ADJUSTING THE WATER CONTENT IN THE REACTION WITHIN THE RANGE OF FROM 0.05 TO 0.1 P.S.I.A.; AND (3) THEN INJECTING HALOGEN OR COMPOUNDS OF HALOGEN INTO THE REACTION ZONE TO INCREASE THE HALIDE CONTENT OF THE CATALYST.
Inventors
- 👤 Charles S Mccoy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:29
CPC Classifications
C; 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) | 1974-03-29 | 1974-09-28 | 1975-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-29 | 1978-09-28 | 1979-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-29 | 1982-09-28 | 1983-03-30 | $7700.00 | Window Closed / Lapsed |