US2769309A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for separating fluid mixtures
Assignee: Gulf Oil Corp
•
Filing: 1952-08-07
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Granted: 1956-11-06
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Expires: 1972-08-07
Abstract
No abstract record available.
Inventors
- 👤 Robert L Irvine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:27
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/14; B01D3/007; B01D3/32; B01D3/322
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2182098A
Cited
US2284662A
Cited
US2127004A
Cited
US2336097A
Cited
US2461513A
Cited
US2534274A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-06 | 1960-05-07 | 1960-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-06 | 1964-05-07 | 1964-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-06 | 1968-05-07 | 1968-11-06 | $7700.00 | Window Closed / Lapsed |