US3469630A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of minimizing adsorption of surfactant from flooding water
Assignee: Mobil Oil AS
•
Filing: 1967-10-09
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Granted: 1969-09-30
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Expires: 1987-10-09
Abstract
No abstract record available.
Inventors
- 👤 Billy G Hurd
- 👤 William R Foster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:56
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/16; E21B43/20; Y; Y10; Y10S; Y10S507/00; Y10S507/935; Y10S507/936
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3126952A
Cited
US2748080A
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US3191676A
Cited
US3246694A
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US3283812A
Cited
US3289759A
Cited
US3371710A
Cited
US3369602A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-29 | 1973-03-31 | 1973-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-29 | 1977-03-31 | 1977-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-29 | 1981-03-31 | 1981-09-30 | $7700.00 | Window Closed / Lapsed |