Patent US3835023A successfully refreshed from Google Patents.
US3835023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gasoline prepared from cracking hydrodesulfurized residual oil
Assignee: Gulf Research and Development Co
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Filing: 1972-01-10
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Granted: 1974-09-10
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Expires: 1992-01-10
Abstract
Abstract A GASOLINE IS PRODUCED BY ZEOLITIC RISER CRACKING OF A DISTILATE GAS OIL BOILING BELOW 1050*F. TOGETHER WITH AN AMOUNT LESS THAN 25 VOLUME PERCENT OF HYDRODESULFURIZED CRUDE OIL RESIDUE BOILING ABOVE 1050*F. THE PROPORTION IN THE GASOLINE OF THE CRACKED PRODUCTS OF THE HYDRODESULFURIZED RESIDUE OIL CONSTITUTING AN INCREASED VOLUMETRIC GASOLINE YIELD AND ELEVATING THE OCTANE VALUE OF THE LOWEST OCTANE 100*F. BOILING RANGE FRACTION OF THE CRACKED PRODUCTS IN THE GASOLINE DERIVED EXCLUSIVELY FROM THE DISTILLATE GAS OIL BOILING RANGE HYDROCARBONS.
Inventors
- 👤 M Bryson
- 👤 Kinney J Mc
- 👤 R Titmus
- 👤 F White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:41
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/04; C10L1/06
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) | 1977-09-09 | 1978-03-11 | 1978-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-09 | 1982-03-11 | 1982-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-09 | 1986-03-11 | 1986-09-10 | $7700.00 | Window Closed / Lapsed |