Patent US3870914A successfully refreshed from Google Patents.
Patent US3649239A successfully refreshed from Google Patents.
US3649239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid fertilizer compositions
Assignee: Galdonost Dynamics Nz Ltd
•
Filing: 1969-07-23
•
Granted: 1972-03-14
•
Expires: 1989-07-23
Abstract
Abstract Fertilizer compositions are prepared from a solution of a soluble alginate and soluble fertilizer chemicals and/or insoluble fertilizer chemicals in emulsion form. Such compositions rely on the gelling action of alginic acid; the gel when formed holds the fertilizer chemicals inside its mass and releases them slowly to the soil.
Inventors
- 👤 Allen F Mitchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:57
CPC Classifications
C; C05; C05G; C05G5/00; C05G5/20; C05G5/23; C05G5/27; Y; Y10; Y10S; Y10S47/00; Y10S47/10
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
18 words
A fertilizer composition as claimed in claim 1 where the buffering agent is di-potassium hydrogen phosphate/potassium di-hydrogen phosphate.
Claim 2
Dependent Claim
19 words
A fertilizer composition as claimed in claim 1 wherein the pH of the composition is between 7 and 8.
Claim 3
Dependent Claim
29 words
A liquid fertilizer composition as claimed in claim 1 wherein said system is buffered to a pH of from 7 to 8 by the presence of di-potassium hydrogen phosphate.
Claim 4
Dependent Claim
24 words
A process for promoting the growth of plants comprising applying a fertilizer composition as claimed in claim 1 to the locus of the plant.
Claim 5
Dependent Claim
19 words
A process as claimed in claim 5 wherein the pH of the composition is selected to suit soil types.
Claim 6
Dependent Claim
22 words
A process as claimed in claim 6 comprising applying a fertilizer composition having pH between 7 and 8 to an acidic soil.
Claim 7
Dependent Claim
25 words
A process as claimed in claim 6 comprising adding a fertilizer composition having a pH in the range 4.2 to 7 to an alkaline soil.
Claim 8
Dependent Claim
27 words
A process as claimed in claim 7 wherein the composition additionally contains a buffering agent which buffers the composition in the pH range of 7 to 8.
Claim 9
Dependent Claim
27 words
A process as claimed in claim 8 where the composition additionally contains a buffering agent which buffers the composition in the range of pH 4.2 to 7.
Claim 10
Dependent Claim
15 words
A process as claimed in claim 9 where the buffering agent is di-potassium hydrogen phosphate.
Claim 11
Dependent Claim
15 words
A process as claimed in claim 10 wherein the buffering agent is potassium di-hydrogen phosphate.
Claim 12
Dependent Claim
54 words
A process for promoting the growth of plants comprising applying to the locus of the plants, a composition as claimed in claim 1 and applying thereafter, a heavy metal salt to increase the rate of formation of the alginic acid gel or applying thereafter an alkaline material to raise the pH of the composition.
Claim 13
Dependent Claim
16 words
A process as claimed in claim 13 wherein the alkaline material is sodium or potassium carbonate.
Claim 14
Dependent Claim
13 words
A process as claimed in claim 7 wherein the heavy metal is calcium.
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) | 1975-03-14 | 1975-09-13 | 1976-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-14 | 1979-09-13 | 1980-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-14 | 1983-09-13 | 1984-03-14 | $7700.00 | Window Closed / Lapsed |