US2998095A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas absorption
Assignee: Phillips Petroleum Co
•
Filing: 1959-06-12
•
Granted: 1961-08-29
•
Expires: 1979-06-12
Abstract
No abstract record available.
Inventors
- 👤 Charles G Mitchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:16
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/14; B01D53/1406
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2608516A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-28 | 1965-02-27 | 1965-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-28 | 1969-02-27 | 1969-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-28 | 1973-02-27 | 1973-08-29 | $7700.00 | Window Closed / Lapsed |