US3362477A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for injecting fluids into earth formations penetrated by a well
Assignee: Chevron USA Inc
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Filing: 1964-11-13
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Granted: 1968-01-09
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Expires: 1984-11-13
Abstract
No abstract record available.
Inventors
- 👤 Brandt Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:24
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/02; E21B43/025; E21B33/00; E21B33/10; E21B33/13; E21B33/138; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7784; Y10T137/7787; Y10T137/7791
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1939630A
Cited
US1927958A
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US2107006A
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US2361194A
Cited
US2643208A
Cited
US2611436A
Cited
US2973039A
Cited
US3022829A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-08 | 1971-07-10 | 1972-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-08 | 1975-07-10 | 1976-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-08 | 1979-07-10 | 1980-01-09 | $7700.00 | Window Closed / Lapsed |