US2422790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of coking oils
Assignee: ExxonMobil Oil Corp
•
Filing: 1940-12-19
•
Granted: 1947-06-24
•
Expires: 1960-12-19
Abstract
No abstract record available.
Inventors
- 👤 Lee Russell
- 👤 Henry D Noll
- 👤 Vladimir A Kalichevsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:04
CPC Classifications
C; C10; C10B; C10B55/00; C10B55/02; C10B55/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1453037A
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US1450327A
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GB255159A
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US1717884A
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US1827915A
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US1773180A
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US1989927A
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US2114416A
Cited
US2143949A
Cited
US2271095A
Cited
US2239801A
Cited
US2237339A
Cited
US2301322A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-06-23 | 1950-12-23 | 1951-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-06-23 | 1954-12-23 | 1955-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-06-23 | 1958-12-23 | 1959-06-24 | $7700.00 | Window Closed / Lapsed |