Patent US3788973A successfully refreshed from Google Patents.
US3788973A
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US
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High conversion hydrogenation
Assignee: HRI Inc
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Filing: 1971-12-23
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Granted: 1974-01-29
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Expires: 1991-12-23
Abstract
Abstract A HIGH CONVERSION HYDROGENATION PROCESS FOR CONVERING A PETROLEUM RESIDUUM HAVING AT LEAST 25 PERCENT BY VOLUME BOILING ABOVE 975* F. TO MATERIAL BOILING BELOW 975* F. TAKES PLACE IN A SERIES OF EBULLATED BED REACTORS. AT LEAST 65 PERCENT OF THE METALS IN THE RESIDUUM FED TO THE FIRST REACTOR IS DEPOSITED ON THE CATALYST IN THE FIRST REACTOR. THE REACTORS ARE OPERATED WITHIN 25* F. OF ONE ANOTHER TO ACCOMPLISH THIS. THE RATIO OF THE PRODUCTS BOILING IN THE 392* TO 750: F. RANGE IS MAINTAINED AT LESS THEN TWICE THAT OF THE PRODUCTS BOILING IN THE C4 TO 392* F. RANGE.
Inventors
- 👤 S Alpert
- 👤 R Wolk
- 👤 M Chervenak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:56
CPC Classifications
C; C10; C10G; C10G65/00; C10G65/02; C10G65/12; C10G49/00; C10G49/10; C10G49/12
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) | 1977-01-28 | 1977-07-30 | 1978-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-28 | 1981-07-30 | 1982-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-28 | 1985-07-30 | 1986-01-29 | $7700.00 | Window Closed / Lapsed |