Patent US3481404A successfully refreshed from Google Patents.
US3481404A
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US
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Sandstone acidizing process
Assignee: ExxonMobil Upstream Research Co
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Filing: 1969-02-03
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Granted: 1969-12-02
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Expires: 1989-02-03
Abstract
No abstract record available.
Inventors
- 👤 John L Gidley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:58
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60; C09K8/62; C09K8/72
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1969230A
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US2118386A
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US2094479A
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US2367350A
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US2356205A
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US2885004A
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US3131759A
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US3254718A
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US3233672A
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US3343602A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-01 | 1973-06-02 | 1973-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-01 | 1977-06-02 | 1977-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-01 | 1981-06-02 | 1981-12-02 | $7700.00 | Window Closed / Lapsed |