Patent US4752294A successfully refreshed from Google Patents.
US2655463A
Expired / Lapsed
US
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Desulfurization of hydrocarbons
Assignee: Universal Oil Products Co
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Filing: 1950-11-30
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Granted: 1953-10-13
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Expires: 1970-11-30
Abstract
No abstract record available.
Inventors
- 👤 Alfred E Hoffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:21
CPC Classifications
C; C10; C10G; C10G17/00; C10G17/02; C10G17/04; C10G17/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
A PROCESS FOR DESULFURIZING HYDROCARBONS CONTAINING SULFUR WHICH COMPRISES TREATING SAID HYDROCARBONS WITH A SOLUTION OF HYDROGEN FLUORIDE IN A CHLOROFLUOROHYDROCARBON AT A TEMPERATURE OF FROM ABOUT 50* TO ABOUT 200* F. AND AT A PRESSURE OF FROM ABOUT 100 TO ABOUT 500 POUNDS PER SQUARE INCH.
Claim 2
Dependent Claim
47 words
A PROCESS FOR DESULFURIZING HYDROCARBONS CONTAINING SULFUR WHICH COMPRISES TREATING SAID HYDROCARBONS WITH A SOLUTION OF HYDROGEN FLUORIDE IN A CHLOROFLUOROHYDROCARBON AT A TEMPERATURE OF FROM ABOUT 50* TO ABOUT 200* F. AND AT A PRESSURE OF FROM ABOUT 100 TO ABOUT 500 POUNDS PER SQUARE INCH.
References Cited (Backward Citations)
US2378762A
Cited
US2465964A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-12 | 1957-04-13 | 1957-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-12 | 1961-04-13 | 1961-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-12 | 1965-04-13 | 1965-10-13 | $7700.00 | Window Closed / Lapsed |