US4219348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Storage-stable nitrogen-zinc foliar spray compositions
Assignee: FERTILIZER INDUSTRIES Inc
•
Filing: 1978-11-16
•
Granted: 1980-08-26
•
Expires: 1998-11-16
Abstract
Abstract Storage-stable fertilizer compositions comprising aqueous solutions of zinc nitrate, ammonium nitrate and optionally, urea, in minor amounts, are provided.
Inventors
- 👤 Thomas M. Parham, Jr.
- 👤 James E. Sansing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:39
CPC Classifications
C; C05; C05C; C05C1/00; C05C5/00; C05C9/00; C05D; C05D9/00; C05D9/02; C05G; C05G1/00; C05G5/00; C05G5/20; C05G5/23; Y; Y10; Y10S; Y10S71/00; Y10S71/04
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
88 words
A composition comprising a storage-stable fertilizer solution of pH below about 5 consisting essentially of water, about 8% to 20%, by weight, of zinc nitrate solute, about 18% to 36%, by weight, of ammonium nitrate solute and urea solute in an amount from 0 up to about 6%, by weight, of the composition, said fertilizer solution having an ammonium nitrate to urea weight ratio of at least about 3 to 1 and a nitrogen to zinc weight ration of between about 1 to 1 and 8 to 1.
Claim 2
Dependent Claim
88 words
A composition comprising a storage-stable fertilizer solution of pH below about 5 consisting essentially of water, about 8% to 20%, by weight, of zinc nitrate solute, about 18% to 36%, by weight, of ammonium nitrate solute and urea solute in an amount from 0 up to about 6%, by weight, of the composition, said fertilizer solution having an ammonium nitrate to urea weight ratio of at least about 3 to 1 and a nitrogen to zinc weight ration of between about 1 to 1 and 8 to 1.
Claim 3
Dependent Claim
33 words
The composition of claim 1 additionally containing up to about 1,000 parts, by weight, of water, per part of the composition, said composition being capable of being applied as a foliar spray fertilizer.
Claim 4
Dependent Claim
16 words
The composition of claim 1, further characterized by having a salt-out temperature below about 32° F.
Claim 5
Dependent Claim
30 words
The composition of claim 1 having a pH of between about 3.5 and 5 additionally containing a water-soluble thiosulfate compound in an amount sufficient to inhibit corrosion to carbon steel.
Claim 6
Dependent Claim
104 words
The composition of claim 1 wherein the zinc nitrate is present in an amount between about 12% and 18%, by weight, the ammonium nitrate is present in an amount between about 25% and 35%, by weight, the urea is present in an amount from 0 up tp about 4%, by weight of the composition, and the pH of the fertilizer solution is between about 3.7 and 4.5, said fertilizer solution having an ammonium nitrate to urea weight ration of between 5 to 1 and 15 to 1 and a nitrogen to zinc weight ratio of between about 2 to 1 and 6 to 1.
Claim 7
Dependent Claim
33 words
The composition of claim 5 additionally containing up to about 200 parts, by weight, of water, per part of the composition, said composition being capable of being applied as a foliar spray fertilizer.
Claim 8
Dependent Claim
16 words
The composition of claim 5, further characterized by having a salt-out temperature below about 28° F.
Claim 9
Dependent Claim
35 words
The composition of claim 5, additionally containing a water soluble thiosulfate compound selected from the group consisting of ammonium thiosulfate, sodium thiosulfate and potassium thiosulfate in an amount sufficient to inhibit corrosion to carbon steel.
Claim 10
Dependent Claim
90 words
The composition of claim 1 wherein the zinc nitrate is present in an amount between about 14% and 16%, by weight, the ammonium nitrate is present in an amount between about 28% and 32%, by weight, and the urea is present in an amount up to about 3%, by weight, of the composition, and the pH of the fertilizer solution is between about 3.7 and 4.5, said composition being substantially free of zinc-containing precipitates after storage at temperatures of at least about 85° F. for a period of four months.
Claim 11
Dependent Claim
38 words
The composition of claim 9 additionally containing a water-soluble thiosulfate compound selected from the group consisting of ammonium thiosulfate, sodium thiosulfate and potassium thiosulfate present in an amount between about 0.1 and 0.5%, by weight, of the composition.
Claim 12
Dependent Claim
34 words
The composition of claim 10 additionally containing between about 80 and 200 parts, by weight, of water, per part of the composition, said composition being capable of being applied as a foliar spray fertilizer.
Claim 13
Dependent Claim
16 words
The composition of claim 10 further characterized by having a salt-out temperature below about 28° F.
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) | 1983-08-26 | 1984-02-25 | 1984-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-08-26 | 1988-02-25 | 1988-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-08-26 | 1992-02-25 | 1992-08-26 | $7700.00 | Window Closed / Lapsed |