US2988347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid-liquid contacting apparatus
Assignee: Phillips Petroleum Co
•
Filing: 1956-08-13
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Granted: 1961-06-13
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Expires: 1976-08-13
Abstract
No abstract record available.
Inventors
- 👤 Lawrence G Molique
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:26
CPC Classifications
B; B01; B01D; B01D47/00; B01D11/00; B01D11/04; B01D11/0426
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US798964A
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US948376A
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US972880A
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US2009347A
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US2137735A
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US2159303A
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US2228128A
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US2240752A
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US2456398A
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US2398836A
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US2398068A
Cited
FR970110A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-12 | 1964-12-12 | 1965-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-12 | 1968-12-12 | 1969-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-12 | 1972-12-12 | 1973-06-13 | $7700.00 | Window Closed / Lapsed |