US2999560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation for flare systems
Assignee: Phillips Petroleum Co
•
Filing: 1956-12-20
•
Granted: 1961-09-12
•
Expires: 1976-12-20
Abstract
No abstract record available.
Inventors
- 👤 Charles L Seefluth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:16
CPC Classifications
B; B01; B01D; B01D45/00; B01D45/02; C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US532829A
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US627675A
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US1873594A
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FR748736A
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US2198412A
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US2522429A
Cited
US2651418A
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US2626007A
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US2785766A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-11 | 1965-03-13 | 1965-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-11 | 1969-03-13 | 1969-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-11 | 1973-03-13 | 1973-09-12 | $7700.00 | Window Closed / Lapsed |