Patent US2755227A successfully refreshed from Google Patents.
US2755227A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removing corrosive sulfur from naphtha with anhydrous copper sulfate
Assignee: Pure Oil Co
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Filing: 1954-03-22
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Granted: 1956-07-17
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Expires: 1974-03-22
Abstract
No abstract record available.
Inventors
- 👤 Lucas Kenneth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:43
CPC Classifications
C; C10; C10G; C10G29/00; C10G29/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
THE METHOD OF TRANSFORMING HYDROCARBON MIXTURES CONTAINING SULFUR COMPOUNDS WHICH GIVE A POSITIVE DISTILLATION-CORROSION TEST INTO PRODUCTS WHICH PASS THAT TEST, COMPRISING SUBJECTING SAID HYDROCARBON MIXTURES TO CONTACT WITH COPPER SULFATE AT A TEMPERATURE BETWEEN ABOUT 400* AND 500* F. AND SEPARATING NON-CORROSIVE HYDROCARBON PRODUCTS THEREFROM.
Claim 2
Independent Claim
46 words
THE METHOD OF TRANSFORMING HYDROCARBON MIXTURES CONTAINING SULFUR COMPOUNDS WHICH GIVE A POSITIVE DISTILLATION-CORROSION TEST INTO PRODUCTS WHICH PASS THAT TEST, COMPRISING SUBJECTING SAID HYDROCARBON MIXTURES TO CONTACT WITH COPPER SULFATE AT A TEMPERATURE BETWEEN ABOUT 400* AND 500* F. AND SEPARATING NON-CORROSIVE HYDROCARBON PRODUCTS THEREFROM.
References Cited (Backward Citations)
US523716A
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US525969A
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US2020661A
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US1840158A
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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) | 1959-07-17 | 1960-01-16 | 1960-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-17 | 1964-01-16 | 1964-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-17 | 1968-01-16 | 1968-07-17 | $7700.00 | Window Closed / Lapsed |