Patent US3761239A successfully refreshed from Google Patents.
US3761239A
Expired / Lapsed
US
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Process for producing land fill compositions
Assignee: Individual
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Filing: 1971-11-24
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Granted: 1973-09-25
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Expires: 1991-11-24
Abstract
Abstract WASTE SLIMES AND TAILINGS FROM ORE, PARTICULARLY PHOSPHATE ROCK OPERATIONS CONTAINING AS AN EXAMPLE, FROM ABOUT 6 TO ABOUT 40 PARTS BY WEIGHT ON A DRY BASIS OF SLIMES, FROM ABOUT 60 TO 90 PARTS BY WEIGHT OR A DRY BASIS OF TAILINGS, AND WATER IN AN AMOUNT SUFFICIENT TO PROVIDE A MOISTURE CONTENT OF 15% TO 30% BASED ON TOTAL COMPOSITION BY WEIGHT, ABOUT 93% BY WEIGHT ON A DRY BASIS OF THE SOLID PARTICLES OF THE COMPOSITION HAVING A PARTICLE SIZE OF MINUS 16 MESH. IN ORTHER EXAMPLES CALCIUM SULFATE IS EMPLOYED.
Inventors
- 👤 C Cook
- 👤 E Haynsworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:38
CPC Classifications
C; C05; C05B; C05B17/00; Y; Y10; Y10S; Y10S210/00; Y10S210/902; Y10S210/906; Y10S210/907; Y10S71/00; Y10S71/903
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-24 | 1977-03-26 | 1977-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-24 | 1981-03-26 | 1981-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-24 | 1985-03-26 | 1985-09-25 | $7700.00 | Window Closed / Lapsed |