US3490589A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Controlled phase separation vessel
Assignee: Petro Canada Exploration Inc
•
Filing: 1968-06-17
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Granted: 1970-01-20
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Expires: 1988-06-17
Abstract
No abstract record available.
Inventors
- 👤 Lubomyr M O Cymbalisty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:07
CPC Classifications
C; C10; C10G; C10G1/00; C10G1/04; C10G1/045; B; B01; B01D; B01D21/00; B01D21/0018; B01D21/0024; B01D21/0039; B01D21/0042; B01D21/0051; B01D21/10; B01D21/24; B01D21/2427; B01D21/0084
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-19 | 1973-07-21 | 1974-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-19 | 1977-07-21 | 1978-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-19 | 1981-07-21 | 1982-01-20 | $7700.00 | Window Closed / Lapsed |