US4033745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-burning storable liquid fertilizer
Assignee: FERTILIZER INDUSTRIES Inc
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Filing: 1976-06-03
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Granted: 1977-07-05
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Expires: 1996-06-03
Abstract
Abstract A complete, non-burning, liquid fertilizer suspension, releasing nitrogen as required by plants without damage by high concentrations of contained nitrogen, comprising highly polymerized urea-formaldehyde, water soluble sugars, aliphatic alcohols, and water. To achieve desired properties solids content totals 50-70% by weight; sugars, 3 to 10%; alcohols, 0.05 to 1.0%; and urea to formaldehyde mol ratio is 1.7 to 2.3. Said composition retains pH of 6 to 7, viscosity of 200 to 350 centipoises, and stable suspension character until applied, and then stimulates growth of plants, particularly grasses.
Inventors
- 👤 William Percy Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:02
CPC Classifications
C; C05; C05C; C05C9/00; C05C9/02
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
101 words
A non-burning, storable, liquid suspension grass turf fertilizer composition with improved stability and turf growth stimulation, comprising: 40 to 45% water; 12 to 16% nitrogen from urea formaldehyde polymers having a urea to formaldehyde mol ratio of 1.6/1 to 2/1 with no free urea of formalehyde, with 60 to 80% of the nitrogen present in the water insoluble form, and the water insoluble nitrogen having an activity index of 25 to 35; 0.05 to 0.20% by weight methyl alcohol; and 3 to 6% by weight of water soluble sugars in the form of 75 to 96 Brix cane or beet molasses.
Claim 2
Dependent Claim
101 words
A non-burning, storable, liquid suspension grass turf fertilizer composition with improved stability and turf growth stimulation, comprising: 40 to 45% water; 12 to 16% nitrogen from urea formaldehyde polymers having a urea to formaldehyde mol ratio of 1.6/1 to 2/1 with no free urea of formalehyde, with 60 to 80% of the nitrogen present in the water insoluble form, and the water insoluble nitrogen having an activity index of 25 to 35; 0.05 to 0.20% by weight methyl alcohol; and 3 to 6% by weight of water soluble sugars in the form of 75 to 96 Brix cane or beet molasses.
Claim 3
Dependent Claim
68 words
Complete fertilizer composition of claim 1 comprising 12 to 16% by weight nitrogen from urea formaldehyde polymers; 4 to 10% by weight phosphorous pentoxide from ammonium polyphosphate solution; and 3 to 8% by weight of potassium oxide from potassium chloride; with said fertilizer composition having properties of 1.10 to 1.20 grams per milliliter specific gravity, 6.1 to 6.4 pH, and a kinematic viscosity of 200 to 350 sentistokes.
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) | 1980-07-04 | 1981-01-03 | 1981-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-04 | 1985-01-03 | 1985-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-04 | 1989-01-03 | 1989-07-05 | $7700.00 | Window Closed / Lapsed |