Patent US3658690A successfully refreshed from Google Patents.
US3658690A
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Gasoline upgrading
Assignee: Mobil Oil AS
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Filing: 1970-03-13
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Granted: 1972-04-25
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Expires: 1990-03-13
Abstract
Abstract A combination processing arrangement of reforming, isomerization, aromatics recovery and intervening fractionation is described which will improve upon the yield of gasoline product having a lead free octane rating above 90 by particularly upgrading C6 hydrocarbons.
Inventors
- 👤 Richard G Graven
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:37
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/04; C10L1/06
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
17 words
The method of claim 1 wherein said gasoline boiling range material is desulfurized before effecting separation thereof.
Claim 2
Dependent Claim
18 words
The method of claim 1 wherein desulfurization of the fractions is accomplished after the separation of step (a).
Claim 3
Dependent Claim
23 words
The method of claim 1 wherein C7 hydrocarbons removed in step (e) are converted to useful product materials by thermal and catalytic cracking.
References Cited (Backward Citations)
US2905619A
Cited
US2965561A
Cited
US3001927A
Cited
US3165461A
Cited
US3121676A
Cited
US3280022A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-25 | 1975-10-25 | 1976-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-25 | 1979-10-25 | 1980-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-25 | 1983-10-25 | 1984-04-25 | $7700.00 | Window Closed / Lapsed |