US2881066A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing nitrogenated and phosphorylated fertilizer, mulch and soil conditioner
Assignee: Southern Lumber Co
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Filing: 1956-03-23
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Granted: 1959-04-07
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Expires: 1976-03-23
Abstract
No abstract record available.
Inventors
- 👤 Reavis C Sproull
- 👤 Jr Clarence D Cone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:50
CPC Classifications
C; C05; C05B; C05B17/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
IN A PROCESS FOR PRODUCING A COMBINED FERTILIZER, MULCH AND SOIL CONDITIONER, THE STEPS WHICH COMPRISE CHEMICALLY REACTING COMMINUTED WOOD-LIKE MATERIAL WITH AN AQUEOUS SOLUTION OF UREA AND PHOSPHORIC ACID AT A TEMPERATURE OF FROM 80* TO 100*C. WHEREBY WATER INSOLUBLE NITROGEN AND PHOSPHORUS COMPOUNDS ARE CHEMICALLY BONDED WITHIN SAID MATERIAL.
Claim 2
Dependent Claim
51 words
IN A PROCESS FOR PRODUCING A COMBINED FERTILIZER, MULCH AND SOIL CONDITIONER, THE STEPS WHICH COMPRISE CHEMICALLY REACTING COMMINUTED WOOD-LIKE MATERIAL WITH AN AQUEOUS SOLUTION OF UREA AND PHOSPHORIC ACID AT A TEMPERATURE OF FROM 80* TO 100*C. WHEREBY WATER INSOLUBLE NITROGEN AND PHOSPHORUS COMPOUNDS ARE CHEMICALLY BONDED WITHIN SAID MATERIAL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-06 | 1962-10-06 | 1963-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-06 | 1966-10-06 | 1967-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-06 | 1970-10-06 | 1971-04-07 | $7700.00 | Window Closed / Lapsed |