Patent US3482634A successfully refreshed from Google Patents.
US3482634A
Expired / Lapsed
US
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Process for sealing porous earth formations by cementing
Assignee: Milchem Inc
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Filing: 1968-06-28
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Granted: 1969-12-09
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Expires: 1988-06-28
Abstract
No abstract record available.
Inventors
- 👤 William A Cox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:11
CPC Classifications
C; C09; C09K; C09K17/00; C09K17/02; C09K17/06; C09K8/00; C09K8/50; C09K8/504; C09K8/5045
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2198120A
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US2320954A
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US2863509A
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US3028913A
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US3274784A
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US3111006A
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US3303882A
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US3227213A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-08 | 1973-06-09 | 1973-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-08 | 1977-06-09 | 1977-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-08 | 1981-06-09 | 1981-12-09 | $7700.00 | Window Closed / Lapsed |