US3497008A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of propping fractures with ceramic particles
Assignee: ExxonMobil Upstream Research Co
•
Filing: 1968-03-05
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Granted: 1970-02-24
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Expires: 1988-03-05
Abstract
No abstract record available.
Inventors
- 👤 Harold L Graham
- 👤 Othar M Kiel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:09
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/25; E21B43/26; E21B43/267
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2944018A
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US2962095A
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US3149673A
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US3389982A
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US3175615A
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US3316967A
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US3370650A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-23 | 1973-08-25 | 1974-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-23 | 1977-08-25 | 1978-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-23 | 1981-08-25 | 1982-02-24 | $7700.00 | Window Closed / Lapsed |