Patent US2912379A successfully refreshed from Google Patents.
US2912379A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire extinguishing composition
Assignee: Diamond Shamrock Corp
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Filing: 1956-07-16
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Granted: 1959-11-10
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Expires: 1976-07-16
Abstract
No abstract record available.
Inventors
- 👤 John H Mccracken
- 👤 Jacobson Larry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:38
CPC Classifications
A; A62; A62D; A62D1/00; A62D1/0007; A62D1/0014
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
THE METHOD OF OBTAINING A DRY, PULVERULENT, FREEFLOWING FIRE EXTINGUISHING COMPOSITION WHICH INCLUDES COMBINING WITH FINELY DIVIDED PARTICLES OF AN ALKALI METAL BICARBONATE, FINELY DIVIDED PARTICLES OF AN ALKALINE EARTH METAL CARBONATE, THE SURFACES OF WHICH HAVE A COATING OF A FATTY ACID OF MORE THAN EIGHT CARBON ATOMS DEPOSITED THEREON, SAID COATING AMOUNT TO 0.5% TO 6% OF SAID ALKALINE EARTH METAL CARBONATE, TH E COATED PARTICLES OF ALKALINE EARTH METAL CARBONATE AMOUNTING TO 0.5% TO 5% OF THE WEIGHT OF SAID ALKALINE EARTH BICARBONATE, AND MIXING SAID COATED ALKALINE EARTH METAL CARBONATE, WITH SAID ALKALI METAL BICARBONATE UNTIL A SUBSTANTIALLY UNIFORM DISPERSION OF THE COATED ALKALINE EARTH METAL CARBONATE PARTICLES IN THE ALKALI METAL BICARBONATE PARTICLES IS OBTAINED.
Claim 2
Independent Claim
120 words
THE METHOD OF OBTAINING A DRY, PULVERULENT, FREEFLOWING FIRE EXTINGUISHING COMPOSITION WHICH INCLUDES COMBINING WITH FINELY DIVIDED PARTICLES OF AN ALKALI METAL BICARBONATE, FINELY DIVIDED PARTICLES OF AN ALKALINE EARTH METAL CARBONATE, THE SURFACES OF WHICH HAVE A COATING OF A FATTY ACID OF MORE THAN EIGHT CARBON ATOMS DEPOSITED THEREON, SAID COATING AMOUNT TO 0.5% TO 6% OF SAID ALKALINE EARTH METAL CARBONATE, TH E COATED PARTICLES OF ALKALINE EARTH METAL CARBONATE AMOUNTING TO 0.5% TO 5% OF THE WEIGHT OF SAID ALKALINE EARTH BICARBONATE, AND MIXING SAID COATED ALKALINE EARTH METAL CARBONATE, WITH SAID ALKALI METAL BICARBONATE UNTIL A SUBSTANTIALLY UNIFORM DISPERSION OF THE COATED ALKALINE EARTH METAL CARBONATE PARTICLES IN THE ALKALI METAL BICARBONATE PARTICLES IS OBTAINED.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-09 | 1963-05-11 | 1963-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-09 | 1967-05-11 | 1967-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-09 | 1971-05-11 | 1971-11-10 | $7700.00 | Window Closed / Lapsed |