Patent US2416397A successfully refreshed from Google Patents.
US2416397A
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US
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Refining mineral oils
Assignee: Standard Oil Co
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Filing: 1943-09-28
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Granted: 1947-02-25
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Expires: 1963-09-28
Abstract
No abstract record available.
Inventors
- 👤 Norman E Lemmon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:41
CPC Classifications
C; C07; C07C; C07C309/00; C07C309/01; C07C309/62
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1387835A
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US2214037A
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US2218174A
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US2263041A
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US2294884A
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US2303077A
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US2266084A
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US2295065A
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US2335006A
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US2383033A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-02-24 | 1950-08-26 | 1951-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-02-24 | 1954-08-26 | 1955-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-02-24 | 1958-08-26 | 1959-02-25 | $7700.00 | Window Closed / Lapsed |