US2446799A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adsorbent refining method
Assignee: TIDE WATER ASSOCIATED OIL Co
•
Filing: 1945-03-24
•
Granted: 1948-08-10
•
Expires: 1965-03-24
Abstract
No abstract record available.
Inventors
- 👤 Charles C Winding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:20
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/02; B01J20/06; B01J20/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1822848A
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US1935178A
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US1958710A
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GB424734A
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US2053208A
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US2211489A
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US2294779A
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US2406420A
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US2384315A
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US2403088A
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US2397085A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-10 | 1952-02-09 | 1952-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-10 | 1956-02-09 | 1956-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-10 | 1960-02-09 | 1960-08-10 | $7700.00 | Window Closed / Lapsed |