Patent US2854399A successfully refreshed from Google Patents.
US2854399A
Expired / Lapsed
US
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Removal of heavy metals from petroleum stocks
Assignee: Houdry Process Corp
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Filing: 1954-09-21
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Granted: 1958-09-30
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Expires: 1974-09-21
Abstract
No abstract record available.
Inventors
- 👤 Sol W Weller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:04
CPC Classifications
C; C10; C10G; C10G29/00; C10G29/02; C10G29/04; C10G55/00; C10G55/02; C10G55/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
THE PROCESS OF CONVERTING LIQUID HYDROCARBON FEED STOCK CONTAINING RELATIVELY SMALL AMOUNTS OF HEAVY METALS WHICH INCLUDES THE STEPS OF SUBJECTING SAID HYDROCARBONS FEED STOCK TO THE ACTION OF ELEMENTARY SULFUR TO BRING ABOUT THE FORMATION OF HEAVY METAL SULFIDES, SEPARATING A FRACTION HAVING A REDUCED CONTENT OF HEAVY METALS AND HEAVY METAL SULFIDES, SAID FRACTION CONTAINING SUBSTANTIALLY ALL OF SAID HYDROCARBON FEED STOCK, AND THEREAFTER SUBJECTING THE THUS METAL-FREED HYDROCARBON TO A CONVERSION TREATMENT IN THE PRESENCE OF A CATALYST READILY POISONED BY HEAVY METALS, SAID CATALYTIC CONVERSION TREATMENT BEING AT AN ELEVATED TEMPERATURE.
Claim 2
Dependent Claim
95 words
THE PROCESS OF CONVERTING LIQUID HYDROCARBON FEED STOCK CONTAINING RELATIVELY SMALL AMOUNTS OF HEAVY METALS WHICH INCLUDES THE STEPS OF SUBJECTING SAID HYDROCARBONS FEED STOCK TO THE ACTION OF ELEMENTARY SULFUR TO BRING ABOUT THE FORMATION OF HEAVY METAL SULFIDES, SEPARATING A FRACTION HAVING A REDUCED CONTENT OF HEAVY METALS AND HEAVY METAL SULFIDES, SAID FRACTION CONTAINING SUBSTANTIALLY ALL OF SAID HYDROCARBON FEED STOCK, AND THEREAFTER SUBJECTING THE THUS METAL-FREED HYDROCARBON TO A CONVERSION TREATMENT IN THE PRESENCE OF A CATALYST READILY POISONED BY HEAVY METALS, SAID CATALYTIC CONVERSION TREATMENT BEING AT AN ELEVATED TEMPERATURE.
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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) | 1961-09-29 | 1962-03-31 | 1962-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-29 | 1966-03-31 | 1966-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-29 | 1970-03-31 | 1970-09-30 | $7700.00 | Window Closed / Lapsed |