Patent US2464576A successfully refreshed from Google Patents.
US2464576A
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Process for the removal of mercaptans from petroleum distillates with an aqueous alkaline reagent containing lignin and the regeneration of the spent alkaline reagent
Assignee: Standard Oil Co
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Filing: 1946-04-18
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Granted: 1949-03-15
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Expires: 1966-04-18
Abstract
No abstract record available.
Inventors
- 👤 Robert R Hibbard
- 👤 Veatch Franklin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:12
CPC Classifications
C; C10; C10G; C10G27/00; C10G27/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2015038A
Cited
US2272594A
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US2317054A
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US2315530A
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US2413945A
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US2369771A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-03-14 | 1952-09-13 | 1953-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-14 | 1956-09-13 | 1957-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-14 | 1960-09-13 | 1961-03-15 | $7700.00 | Window Closed / Lapsed |