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US3434540A
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Sand control method using a particulate pack with external and internal particle size distribution relationships
Assignee: Mobil Oil AS
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Filing: 1967-10-12
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Granted: 1969-03-25
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Expires: 1987-10-12
Abstract
No abstract record available.
Inventors
- 👤 Nathan Stein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:21
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/02; E21B43/04; E21B43/08; E21B43/086
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US998813A
Cited
US2905245A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-24 | 1972-09-23 | 1973-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-24 | 1976-09-23 | 1977-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-24 | 1980-09-23 | 1981-03-25 | $7700.00 | Window Closed / Lapsed |