Patent US3499491A successfully refreshed from Google Patents.
US3499491A
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Method and composition for cementing oil well casing
Assignee: MI Drilling Fluids Co
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Filing: 1968-06-28
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Granted: 1970-03-10
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Expires: 1988-06-28
Abstract
No abstract record available.
Inventors
- 👤 Reece E Wyant
- 👤 Orien Van Dyke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:12
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/24; C04B28/26; C09; C09K; C09K8/00; C09K8/02; C09K8/04; C09K8/14; C09K8/18; C09K8/20; C09K8/203
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2188767A
Cited
US2287411A
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US2646360A
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US2786531A
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US2705050A
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US3168139A
Cited
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 |