US3702291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for selectively hydrogenating petroleum cuts of the gasoline range in several steps
Assignee: IFP Energies nouvelles
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Filing: 1971-07-07
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Granted: 1972-11-07
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Expires: 1991-07-07
Abstract
Abstract A FEEDSTOCK OF THE GASOLINE RANGE IS SELECTIVELY HYDROGENATED IN THREE STEPS; A FIRST STEP IN LIQUID PHASE WITH A GROUP VIII METAL CATALYST, A SECOND STEP IN GASEOUS PHASE WITH A MOLYBDENUM OR TUNGSTN CATALYST ON A CARRIER OF LOW SURFACE AND A THIRD STEP WITH A MOLYBDENUM OR TUNGSTEN CATALYST ON A CARRIER OF HIGH SURFACE.
Inventors
- 👤 Yves Jacquin
- 👤 Michel Derrien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:02
CPC Classifications
C; C10; C10G; C10G65/00; C10G65/02; C10G65/04; C10G65/06; C10G2400/00; C10G2400/02
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) | 1975-11-07 | 1976-05-08 | 1976-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-07 | 1980-05-08 | 1980-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-07 | 1984-05-08 | 1984-11-07 | $7700.00 | Window Closed / Lapsed |