Patent US2967816A successfully refreshed from Google Patents.
US2967816A
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Process for decolorizing petroleum resins and products obtained by adding the decolorized resins to fuel oil
Assignee: Sinclair Refining Co
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Filing: 1957-07-23
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Granted: 1961-01-10
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Expires: 1977-07-23
Abstract
No abstract record available.
Inventors
- 👤 Charles N Hudson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:29
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/16; C10L1/1616; C10G; C10G45/00; C10G45/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
88 words
A DECOLORIZED, POUR DEPRESSED COMPOSITION PREPARED BY A PROCESS WHICH COMPRISES CONTACTING A BLEND CONSISTING ESSENTIALLY OF ABOUT .05 TO 2 PERCENT BY WEIGHT OF AN OIL-SOLUBLE, PROPANE-INSOLUBLE, PARAFFIN BASE-DERIVED RESINOUS PETROLEUM FRACTION HAVING A VISCOSITY OF ABOUT 3,000 TO 10,000 SSU AT 210*F. AND A PETROLEUM FUEL OIL STOCK BOILING IN THE RANGE OF ABOUT 300-900*F. WITH A DESULFURIZATION CATALYST UNDER NON-CRACKING CONDITIONS OF APPROXIMATELY 600-780*F., 0.5 TO 4.0 WHSV, 300 TO 1000 P.S.I. AND 3 TO 20 TO 1 HYDROGEN TO PETROLEUM FUEL OIL STOCK RATIO.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-10 | 1964-07-11 | 1965-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-10 | 1968-07-11 | 1969-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-10 | 1972-07-11 | 1973-01-10 | $7700.00 | Window Closed / Lapsed |