US3467193A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for achieving turbulence in cementing wells
Assignee: Mobil Oil AS
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Filing: 1966-04-04
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Granted: 1969-09-16
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Expires: 1986-04-04
Abstract
No abstract record available.
Inventors
- 👤 Joseph U Messenger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:18
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/02; C04B28/04; C04B14/00; C04B14/02; C04B14/04; C04B14/06; C04B14/062; C04B14/08; C04B40/00; C04B40/0028; C09; C09K; C09K8/00; C09K8/42; C09K8/46
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2233973A
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US2410954A
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US2585366A
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US2805719A
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US3071481A
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US3053673A
Cited
US3219112A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-15 | 1973-03-17 | 1973-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-15 | 1977-03-17 | 1977-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-15 | 1981-03-17 | 1981-09-16 | $7700.00 | Window Closed / Lapsed |