Patent US4666747A successfully refreshed from Google Patents.
US4666747A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spray method and formulation for use therein
Assignee: Acacia Chemicals Ltd
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Filing: 1985-08-15
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Granted: 1987-05-19
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Expires: 2005-08-15
Abstract
Abstract A wettable powder which can be made up into a sprayable aqueous dispersion for use in pest control to allow an active substance to be applied to a surface to be retained thereon for an extended duration, particularly without undergoing degradation of its properties, comprises the active agent which is an active agent not readily soluble in water and a water-soluble naturally occurring organic product such as a phospholipid having the capacity to serve as a non-polar domain which has high affinity for hydrophobic molecules to keep them in a stable aqueous dispersion.
Inventors
- 👤 Peter J. Quinn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:39
CPC Classifications
A; A01; A01N; A01N25/00; A01N25/26; A01N25/28
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
103 words
A method of applying to a substrate a hydrophobic pesticidal or herbicidal agent which is not readily soluble in water and which is to be effective at the substrate, which comprises: (a) mixing the hydrophobic agent with a water-soluble, naturally occurring amphipathic organic compound to form a wettable powder; (b) mixing said wettable powder with an aqueous medium to form a stable aqueous liposomal dispersion consisting essentially of water, the amphipathic organic compound and the hydrophobic agent; wherein the organic compound includes a non-polar domain which exhibits a high affinity for said hydrophobic agent; and (c) spraying said aqueous dispersion onto the substrate.
Claim 2
Independent Claim
103 words
A method of applying to a substrate a hydrophobic pesticidal or herbicidal agent which is not readily soluble in water and which is to be effective at the substrate, which comprises: (a) mixing the hydrophobic agent with a water-soluble, naturally occurring amphipathic organic compound to form a wettable powder; (b) mixing said wettable powder with an aqueous medium to form a stable aqueous liposomal dispersion consisting essentially of water, the amphipathic organic compound and the hydrophobic agent; wherein the organic compound includes a non-polar domain which exhibits a high affinity for said hydrophobic agent; and (c) spraying said aqueous dispersion onto the substrate.
Claim 3
Dependent Claim
13 words
The method of claim 1, wherein said organic compound is a phospholipid amphipath.
Claim 4
Dependent Claim
24 words
The method of claim 1, wherein said organic compound is denatured collagen, egg albumin, a seaweed extract, a soya product or a fish product.
Claim 5
Dependent Claim
12 words
The method of claim 3, wherein said organic compound is soya lecithin.
Claim 6
Dependent Claim
16 words
The method of claim 1, wherein the agent is a fungicide, insecticide, acaricide, nematocide or molluscicide.
Claim 7
Dependent Claim
11 words
The method of claim 5, wherein the insecticide is a pyrethrin.
Claim 8
Dependent Claim
24 words
The method of claim 1, wherein the powder includes an ultra-violt absorbent which is insoluble in water but is soluble in a non-polar solvent.
Claim 9
Dependent Claim
14 words
The method of claim 1, wherein the powder additionally contains a free radical quencher.
Claim 10
Dependent Claim
15 words
The method of claim 1, wherein the powder additionally contains a pheromone or bait attractant.
Claim 11
Dependent Claim
16 words
The method of claim 1, wherein the water further contains from 5 to 250 mM NaCl.
Claim 12
Dependent Claim
16 words
The method of claim 10, wherein the water further contains from 10 to 20 mM NaCl.
References Cited (Backward Citations)
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GB2015464A
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GB2067406A
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GB2110518A
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EP0068297A1
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EP0068294A1
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-05-18 | 1990-11-17 | 1991-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-18 | 1994-11-17 | 1995-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-18 | 1998-11-17 | 1999-05-19 | $7700.00 | Window Closed / Lapsed |