Patent US2816864A successfully refreshed from Google Patents.
US2816864A
Expired / Lapsed
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Foam-compatible fire-extinguishing composition
Assignee: Ansul Chemical Co
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Filing: 1956-04-03
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Granted: 1957-12-17
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Expires: 1976-04-03
Abstract
No abstract record available.
Inventors
- 👤 William R Warnock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:06
CPC Classifications
A; A62; A62D; A62D1/00; A62D1/0071
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
A FREE FLOWING FIRE-EXTINGUISHING COMPOSITION COMPATIBLE WITH FOAM-PRODUCING EXTINGUISHING AGENTS CONSISTING BY WEIGHT OF 65 TO 92 PERCENT FINELY DIVIDED SODIUM BICARBONATE, 5 TO 25 PERCENT TALC AND 3 TO 10 PERCENT TRICALCIUM PHOSPHATE.
Claim 2
Dependent Claim
34 words
A FREE FLOWING FIRE-EXTINGUISHING COMPOSITION COMPATIBLE WITH FOAM-PRODUCING EXTINGUISHING AGENTS CONSISTING BY WEIGHT OF 65 TO 92 PERCENT FINELY DIVIDED SODIUM BICARBONATE, 5 TO 25 PERCENT TALC AND 3 TO 10 PERCENT TRICALCIUM PHOSPHATE.
References Cited (Backward Citations)
US1891673A
Cited
US2647892A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-16 | 1961-06-17 | 1961-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-16 | 1965-06-17 | 1965-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-16 | 1969-06-17 | 1969-12-17 | $7700.00 | Window Closed / Lapsed |