US3565801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for extinguishing fires with graphite containing foam-compatible fire extinguishing powders
Assignee: Imperial Chemical Industries Ltd
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Filing: 1968-12-30
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Granted: 1971-02-23
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Expires: 1988-12-30
Abstract
Abstract THE RENDER POWDERED FIRE-EXTINGUISHING AGENTS COMPATIBLE WITH FIRE-EXTINGUISHING FOAMS, FOR EXAMPLE FOAMS BASED ON PROTEINS, A MINOR PROPORTION OF GRAPHITE IS INCORPORATED IN THE POWDER. EXAMPLES OF FOAM-COMPATIBLE COMPOSITIONS SO OBTAINED ARE MIXTURES OF SODIUM BICARBONATE OR POTASSIUM BICARBONATE, OR THE FIRE-EXTINGUISHING AGENT MADE BY HEATING UREA WITH POTASSIUM BICARBONATE BELOW 150*C., WITH FINELY DIVIDED GRAPHITE THE PROPORTION OF THE LATTER IN THE MIXTURE BEING 0.01 TO 10% BY WEIGHT. FREE-FLOWING AND ANTI-CAKING AGENTS MAY BE INCLUDED IN THE FOAM-COMPATIBLE COMPOSITIONS.
Inventors
- 👤 James Derek Birchall
- 👤 David Arthur Phillips
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:49
CPC Classifications
A; A62; A62D; A62D1/00; A62D1/0007; A62D1/0014
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |