US3582311A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing aqueous suspension fertilizers
Assignee: FERTILIZER INDUSTRIES Inc
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Filing: 1968-02-16
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Granted: 1971-06-01
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Expires: 1988-02-16
Abstract
Abstract AQEOUS SUSPENSION FERTILIZERS RESISTANT TO SEFIMENTATION AND FORMATION OF LARGE CRYSTALS AND SOLID AGGREGATES ARE FORMULATED TO COMPRISE A WATER-SOLUBLE POLYPHOSPHATE AND A WATER-SOLUBLE MAGNESIUM COMPOUND. THE RATIO OF THE WEIGHT OF THE POLYPHOSPHATE (EXPRESSED AS P2O5) THE WEIGHT OF THE MAGNESIUM COMPOUND (EXPRESSED AS MGO) IS BETWEEN ABOUT 0.2 AND ABOUT 2, AND THE SUM OF THE WEIGHT OF THE POLYPHOSPHATE (EXPRESSED AS P2O5) AND THE WEIGHT OF THE MAGNESIUM COMPOUND (EXPRESSED AS MGO) CONSTITUTES BETWEEN ABOUT 0.5% AND ABOUT 12% OF THE TOTAL WEIGHT OF THE FERTILIZER COMPOSITION.
Inventors
- 👤 Lawrence E Browder
- 👤 Harry E Ulmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:52
CPC Classifications
C; C05; C05B; C05B9/00; C05G; C05G5/00; C05G5/20; C05G5/27; C05B13/00; C05B13/06; C05G3/00
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) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |