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US2434409A
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Process for purifying a hydrocarbon mixture containing small amounts of organic fluorine compounds
Assignee: Universal Oil Products Co
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Filing: 1943-05-31
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Granted: 1948-01-13
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Expires: 1963-05-31
Abstract
No abstract record available.
Inventors
- 👤 Vladimir N Ipatieff
- 👤 Carl B Linn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:23
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/148; C07C7/17; C07C7/171
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2076581A
Cited
US2143493A
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US2292933A
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US2267730A
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US2310327A
Cited
GB540449A
Cited
US2320629A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-01-12 | 1951-07-14 | 1952-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-01-12 | 1955-07-14 | 1956-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-01-12 | 1959-07-14 | 1960-01-13 | $7700.00 | Window Closed / Lapsed |