US3684018A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foam-forming flame-extinguishing compositions containing alkylpolyalkoxysulfates, polyoxyethylene resin and symmetrical dibromotetrafluoroethane
Assignee: Individual
•
Filing: 1971-01-25
•
Granted: 1972-08-15
•
Expires: 1991-01-25
Abstract
Abstract A foam-forming flame-extinguishing composition containing an aqueous solution of a water soluble alkylpolyalkoxy-sulfates, preferably in combination with a polyoxyethylene resin and advantageously, with symmetrical-dibromotetrafluoroethane.
Inventors
- 👤 Nicolino Rainaldi
- 👤 Pierluigi Fatutto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:21
CPC Classifications
A; A62; A62D; A62D1/00; A62D1/0071; C; C08; C08L; C08L81/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
24 words
The composition defined in claim 1 wherein the ratio by weight between said ammonium lauryltriethoxy-sulfate and said polyoxyethylene resin ranges between 2 and 0.5.
Claim 2
Dependent Claim
25 words
The composition defined in claim 2 wherein said polyoxyethylene resin has a viscosity in 0.5 to 5 percent aqueous solution of 5,000 to 8,000 cPs.
Claim 3
Dependent Claim
30 words
The composition defined in claim 3 wherein said polyoxyethylene resin, said ammoniumlauryltriethoxysulfate and said 1,2-dibromotetrafluoroethane are present in an amount of 2 to 70 percent by weight of the composition.
Claim 4
Dependent Claim
56 words
The composition defined in claim 4 cOnsisting essentially of 1 to 10 percent by weight of a 10 percent aqueous solution of ammoniumlauryltriethoxysulfate, 1 to 10 percent by weight of a 0.5 to 5 percent aqueous solution of said polyoxyethlene resin, 2 to 70 percent by weight 1,2-dibromotetrafluoroethane, and 10 to 98 percent by weight water.
Claim 5
Dependent Claim
20 words
A method of extinguishing a hydrocarbon fire, comprising the step of projecting the foaming composition defined in claim 5 thereupon.
References Cited (Backward Citations)
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Cited
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US3258423A
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US3479286A
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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) | 1975-08-15 | 1976-02-14 | 1976-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-15 | 1980-02-14 | 1980-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-15 | 1984-02-14 | 1984-08-15 | $7700.00 | Window Closed / Lapsed |