US2666526A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for separating mixed materials
Assignee: Standard Oil Development Co
•
Filing: 1951-02-02
•
Granted: 1954-01-19
•
Expires: 1971-02-02
Abstract
No abstract record available.
Inventors
- 👤 William W Odell
- 👤 George L Matheson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:01
CPC Classifications
B; B03; B03B; B03B4/00; B03B4/06; Y; Y10; Y10S; Y10S423/00; Y10S423/09; Y10S423/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB299936A
Cited
US1984380A
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US2374865A
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US2444990A
Cited
US2480670A
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US2561396A
Cited
US2512422A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-18 | 1957-07-20 | 1958-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-18 | 1961-07-20 | 1962-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-18 | 1965-07-20 | 1966-01-19 | $7700.00 | Window Closed / Lapsed |