US2776942A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire extinguishing composition and method of extinguishing fires
Assignee: Specialties Development Corp
•
Filing: 1951-12-26
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Granted: 1957-01-08
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Expires: 1971-12-26
Abstract
No abstract record available.
Inventors
- 👤 Walter G Sylvester
- 👤 Jr Charles Anthony
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:40
CPC Classifications
A; A62; A62D; A62D1/00; A62D1/0007; A62D1/0014
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
28 words
A FIRE EXTINGUISHING POWDER CONSISTING ESSENTIALLY OF A FINELY DIVIDED DRY MIXTURE OF ABOUT 85% BY WEIGHT OF SODIUM BICARBONATE, AND ABOUT 15% BY WEIGHT OF LITHIUM CARBONATE.
Claim 2
Dependent Claim
28 words
A FIRE EXTINGUISHING POWDER CONSISTING ESSENTIALLY OF A FINELY DIVIDED DRY MIXTURE OF ABOUT 85% BY WEIGHT OF SODIUM BICARBONATE, AND ABOUT 15% BY WEIGHT OF LITHIUM CARBONATE.
References Cited (Backward Citations)
US1793420A
Cited
US2077282A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-08 | 1960-07-09 | 1961-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-08 | 1964-07-09 | 1965-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-08 | 1968-07-09 | 1969-01-08 | $7700.00 | Window Closed / Lapsed |