US2959581A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilization of sulfurized hydrocarbons
Assignee: ConocoPhillips Co
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Filing: 1958-06-25
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Granted: 1960-11-08
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Expires: 1978-06-25
Abstract
No abstract record available.
Inventors
- 👤 Roy C Sias
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:58
CPC Classifications
C; C10; C10M; C10M135/00; C10M135/02; C10M135/04; C10M2219/00; C10M2219/02; C10M2219/022; C10N; C10N2030/00; C10N2030/10; C10N2030/12; C10N2060/00; C10N2060/10; C10N2070/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A PROCESS OF STABILIZING SULFURIZED HYDROCARBONS, SELECTED FROM THE GROUP CONSISTING OF SULFURIZED OLEFINS AND SULFURIZED OLEFIN-CONTAINING PETROLEUM FRACTIONS, TO RENDER THE MATERIALS LESS CORROSIVE TO METALS, SAID PROCESS INCLUDING THE STEPS OF (A) HEATING THE SULFURIZED PRODUCT AFTER REMOVAL OF ANY EXCESS SULFURIZATION AGENT UNDER AN INERT ATMOSPHERE AT TEMPERATURES OF 10 TO 100*C. ABOVE THE TEMPERATURE OF SULFURIZATION, (B) CONTACTING THE HEATTREATED SULFURIZED PRODUCT AFTER COOLING TO ABOUT 100* C. WITH AQUEOUS ALKALI SULFIDE SOLUTIONS AT REFLUX TEMPERATURES, (C) WASHING THE PRODUCT WITH HOT WATER, AND (D) REMOVING THE WATER.
Claim 2
Dependent Claim
92 words
A PROCESS OF STABILIZING SULFURIZED HYDROCARBONS, SELECTED FROM THE GROUP CONSISTING OF SULFURIZED OLEFINS AND SULFURIZED OLEFIN-CONTAINING PETROLEUM FRACTIONS, TO RENDER THE MATERIALS LESS CORROSIVE TO METALS, SAID PROCESS INCLUDING THE STEPS OF (A) HEATING THE SULFURIZED PRODUCT AFTER REMOVAL OF ANY EXCESS SULFURIZATION AGENT UNDER AN INERT ATMOSPHERE AT TEMPERATURES OF 10 TO 100*C. ABOVE THE TEMPERATURE OF SULFURIZATION, (B) CONTACTING THE HEATTREATED SULFURIZED PRODUCT AFTER COOLING TO ABOUT 100* C. WITH AQUEOUS ALKALI SULFIDE SOLUTIONS AT REFLUX TEMPERATURES, (C) WASHING THE PRODUCT WITH HOT WATER, AND (D) REMOVING THE WATER.
References Cited (Backward Citations)
US2445983A
Cited
US2537297A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-08 | 1964-05-09 | 1964-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-08 | 1968-05-09 | 1968-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-08 | 1972-05-09 | 1972-11-08 | $7700.00 | Window Closed / Lapsed |