US3726788A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-stage hydrocracking with intermediate fractionation
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1970-10-15
•
Granted: 1973-04-10
•
Expires: 1990-10-15
Abstract
Abstract A TWO-STAGE HYDROCARACKING PROCESSES, UTILIZING PALLADIUM ON SYNTHETIC ZEOLITE CATALYST IS CARRIED OUT WITH INTERMEDIATE FRACTIONATION BETWEEN THE STAGES AND WITH HYDROGEN SULFIDE AND AMMONIA PRESENT IN THE FIRST STAGE AND HYDROGEN SULFIDE PRESENT IN THE SECOND STAGE SO AS TO OBTAIN A HIGH-AROMATIC NAPHTHA PRODUCT AND A LOW-AROMATIC JET FUEL PRODUCT. ALTERNATIVELY, THE PROCESS CAN BE USED TO OBTAIN SEGREGATED STREAMS OF A HIGH OCTANE NAPTHA AND A LOWER OCTANE NAPTHA.
Inventors
- 👤 D Trythall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:18
CPC Classifications
B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/064; B01J29/068; C; C10; C10G; C10G47/00; C10G47/02; C10G47/10; C10G47/12; C10G47/16; C10G47/18; C10G65/00; C10G65/02; C10G65/10; C10G65/12; C10L; C10L1/00; C10L1/04; Y; Y10; Y10S; Y10S208/00; Y10S208/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1976-04-09 | 1976-10-09 | 1977-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-09 | 1980-10-09 | 1981-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-09 | 1984-10-09 | 1985-04-10 | $7700.00 | Window Closed / Lapsed |