US3565533A
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US
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Cement additive determination
Assignee: Jackson Memorial Hospital
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Filing: 1969-04-14
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Granted: 1971-02-23
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Expires: 1989-04-14
Abstract
Abstract A METHOD FOR DETERMINING THE DISTRIBUTION OF AN ADDITIVE IN THE DRY INGREDIENTS OF AN OIL WELL CEMENTING COMPOSITION WHEREIN A TRACER DYE IS BLENDED WITH THE ADDITVE AND THE ADDITIVE IS BLENDED WITH THE REMAINDER OF THE CEMENT COMPOSITION, A TEST SAMPLE OF THE TOTAL MIX BEING THEN MIXED WITH A LIQUID TO DISSOLVE THE SYE AND A SPECTRO- PHOTOMETRIC ANALYSIS IS MADE TO DETERMINE THE PERCENTAGE OF THE DYE AND THUS THE ADDITIVE IN THE CEMENT MIX.
Inventors
- 👤 Calixto F Garcia
- 👤 James E Ritter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:53
CPC Classifications
G; G01; G01N; G01N31/00; G01N31/22; C; C04; C04B; C04B40/00; C04B40/0028; C04B40/0039; C04B40/0042; C04B40/0096; C09; C09K; C09K8/00; C09K8/42; C09K8/46; C04B2103/00; C04B2103/20
Claims Analysis
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References Cited (Backward Citations)
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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) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |