US3376926A
Expired / Lapsed
US
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Methods of placement of low ph silicic acid in carbonaceous geological formations
Assignee: Halliburton Co
•
Filing: 1967-04-18
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Granted: 1968-04-09
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Expires: 1987-04-18
Abstract
No abstract record available.
Inventors
- 👤 Homer C Mclaughlin
- 👤 Ronney R Koch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:23
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/50; C09K8/504; C09K8/5045; C09K8/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US3319714A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-09 | 1971-10-09 | 1972-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-09 | 1975-10-09 | 1976-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-09 | 1979-10-09 | 1980-04-09 | $7700.00 | Window Closed / Lapsed |