US3637022A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Use of high water content oil-external micellar solutions for extinguishing fires
Assignee: Marathon Oil Co
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Filing: 1969-10-30
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Granted: 1972-01-25
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Expires: 1989-10-30
Abstract
Abstract A fire-retardant composition comprising an oil-external micellar dispersion containing from about 50 to about 90 percent water, from at least about 3 to about 15 percent surfactant, and from at least about 4 to about 40 percent hydrocarbon is used to extinguish fires, especially hydrocarbon fires, occurring in or near water (e.g. on ships), offshore drilling rigs, etc., and fires occurring in oil and refining facilities where it is imperative to quickly remove the burning oil from the equipment. Additionally, the oil-external micellar dispersion may comprise a cosurfactant, various fire-extinguishing salts, halogenated hydrocarbons, gelling agents, corrosion inhibiting agents, and coloring agents.
Inventors
- 👤 Joe T Kelly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:23
CPC Classifications
A; A62; A62D; A62D1/00; A62D1/0028; A62D1/005
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
27 words
The method of claim 1 wherein the surfactant is a petroleum sulfonate having an average equivalent weight within the range of from about 350 to about 520.
Claim 2
Dependent Claim
19 words
The method of claim 1 wherein the hydrocarbon is comprised of at least a portion of a halogenated hydrocarbon.
Claim 3
Dependent Claim
40 words
The method of claim 1 wherein the dispersion contains at least one or more of the group selected from flame-retarding water soluble phosphates, gelling agents, halogenated hydrocarbons, corrosion inhibiting agents, foaming agents and a visible amount of colored marking agent.
Claim 4
Dependent Claim
24 words
The method of claim 1 wherein the dispersion contains one or more of the components selected from the group consisting of cosurfactant and electrolyte.
Claim 5
Independent Claim
45 words
A method of extinguishing a hydrocarbon fire comprising contacting the burning hydrocarbon with an oil-external micellar dispersion comprised of about 70 to 90 percent water, at least about 3 to about 15 percent of a petroleum sulfonate, and about 4 to about 20 percent hydrocarbon.
Claim 6
Dependent Claim
24 words
The method of claim 6 wherein the dispersion contains one or more of the components selected from the group consisting of cosurfactant and electrolyte.
Claim 7
Dependent Claim
18 words
The method of claim 6 wherein the hydrocarbon is comprised of at least a portion of halogenated hydrocarbon.
Claim 8
Dependent Claim
24 words
The method of claim 7 wherein the petroleum sulfonate has an average equivalent weight within the range of from about 350 to about 520.
Claim 9
Dependent Claim
12 words
The method of claim 7 wherein the hydrocarbon is a halogenated hydrocarbon.
Claim 10
Dependent Claim
22 words
The method of claim 7 wherein the micellar dispersion components are mixed together at a proportional nozzle to form the micellar dispersion.
Claim 11
Dependent Claim
44 words
The method of claim 7 wherein the micellar dispersion contains at least one or more of the components selected from the group consisting of flame-retarding water-soluble phosphates, gelling agents, halogenated hydrocarbons, corrosion inhibiting agents, foaming agents, and a visible amount of colored marking agent.
References Cited (Backward Citations)
US2182440A
Cited
US2356205A
Cited
US3356610A
Cited
US3297084A
Cited
US3330343A
Cited
US3425939A
Cited
US3432454A
Cited
US3254714A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |