US3499488A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Secondary oil recovery process using steam
Assignee: Texaco Inc
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Filing: 1967-11-30
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Granted: 1970-03-10
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Expires: 1987-11-30
Abstract
No abstract record available.
Inventors
- 👤 Stewart Haynes Jr
- 👤 Fuad T Saadeh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:50
CPC Classifications
E; E21; E21B; E21B36/00; E21B36/003; E21B43/00; E21B43/16; E21B43/24; F; F22; F22G; F22G5/00; G; G01; G01N; G01N25/00; G01N25/56; G01N25/58; G01N25/60; G01N27/00; G01N27/02; G01N27/04; G01N27/06
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) | 1973-03-09 | 1973-09-08 | 1974-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-09 | 1977-09-08 | 1978-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-09 | 1981-09-08 | 1982-03-10 | $7700.00 | Window Closed / Lapsed |