Patent US2417637A successfully refreshed from Google Patents.
US2417637A
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Process for removing impurities from oils
Assignee: Baker Petrolite LLC
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Filing: 1939-12-01
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Granted: 1947-03-18
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Expires: 1959-12-01
Abstract
No abstract record available.
Inventors
- 👤 Harold C Eddy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:15
CPC Classifications
C; C10; C10G; C10G33/00; C10G33/02; C10G32/00; C10G32/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US987115A
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US1405119A
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US1405118A
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US1838919A
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US1826276A
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US1825309A
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US1838978A
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US1838890A
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US2033152A
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US2033567A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-03-17 | 1950-09-16 | 1951-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-03-17 | 1954-09-16 | 1955-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-03-17 | 1958-09-16 | 1959-03-18 | $7700.00 | Window Closed / Lapsed |