US2881138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dry powder fire extinguishing medium
Assignee: Individual
•
Filing: 1955-05-23
•
Granted: 1959-04-07
•
Expires: 1975-05-23
Abstract
No abstract record available.
Inventors
- 👤 Reiss Heinrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:22
CPC Classifications
A; A62; A62D; A62D1/00; A62D1/0007; A62D1/0014
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
3. AS A NEW COMPOSITION OF MATTER, A DRY POWDER ADAPTED TO EXTINGUISH FIRES ORIGINATING FROM SOLID, LIQUID AND GASEOUS COMBUSATIBLE MATERIALS, CONSISTING ESSENTIALLY OF AN INTIMATE MIXTURE OF APPROXIMATELY 64 PARTS BY WEIGHT OF AMMONIUM SULFATE, APPROXIMATELY 16.5 PARTS BY WEIGHT OF DIAMMONIUM HYDROGEN PHOSPHATE, APPROXIMATELY 2.5 PARTS BY WEIGHT OF TRI-CALCIUM PHOSPHATE, APPROXIMATELY 16 PARTS BY WEIGHT OF SODIUM BICARBONATE AND APPROXIMATELY 1 PART BY WEIGHT OF MAGNESIUM STEARATE, SAID MIXTURE BEING ADAPTED TO EXTINGUISH FIRES ORIGINATING FROM SOLID, LIQUID AND GASEOUS SUBSTANCES AND WHEN APPLIED TO BURNING SOLID MATERIAL TO EXTINGUISH GLOWING PORTIONS THEREOF.
Claim 2
Dependent Claim
97 words
3. AS A NEW COMPOSITION OF MATTER, A DRY POWDER ADAPTED TO EXTINGUISH FIRES ORIGINATING FROM SOLID, LIQUID AND GASEOUS COMBUSATIBLE MATERIALS, CONSISTING ESSENTIALLY OF AN INTIMATE MIXTURE OF APPROXIMATELY 64 PARTS BY WEIGHT OF AMMONIUM SULFATE, APPROXIMATELY 16.5 PARTS BY WEIGHT OF DIAMMONIUM HYDROGEN PHOSPHATE, APPROXIMATELY 2.5 PARTS BY WEIGHT OF TRI-CALCIUM PHOSPHATE, APPROXIMATELY 16 PARTS BY WEIGHT OF SODIUM BICARBONATE AND APPROXIMATELY 1 PART BY WEIGHT OF MAGNESIUM STEARATE, SAID MIXTURE BEING ADAPTED TO EXTINGUISH FIRES ORIGINATING FROM SOLID, LIQUID AND GASEOUS SUBSTANCES AND WHEN APPLIED TO BURNING SOLID MATERIAL TO EXTINGUISH GLOWING PORTIONS THEREOF.
References Cited (Backward Citations)
US502867A
Cited
GB190100738A
Cited
GB190921168A
Cited
US1271506A
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US1793420A
Cited
GB543702A
Cited
US2472539A
Cited
US2768952A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-06 | 1962-10-06 | 1963-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-06 | 1966-10-06 | 1967-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-06 | 1970-10-06 | 1971-04-07 | $7700.00 | Window Closed / Lapsed |