US2826486A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phosphide compositions
Assignee: Evonik Operations GmbH
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Filing: 1953-06-16
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Granted: 1958-03-11
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Expires: 1973-06-16
Abstract
No abstract record available.
Inventors
- 👤 Huter Ludwig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:08
CPC Classifications
C; C01; C01B; C01B25/00; C01B25/06; A; A01; A01N; A01N59/00; A01N59/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A DRY COMPOSITION OF MATTER COMPRISING A FINELY DIVIDED METAL PHOSPHIDE SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL PHOSPHIDES ALKALINE EARTH METAL PHOSPHIDES AND ALUMINUM PHOSPHIDE IN INTIMATE ADMIXTURE WITH AT LEAST ONE FINELY DIVIDED SUBSTANCE WHICH DECOMPOSES AT RAISED TEMPERATURE WITH EVOLUTION OF CARBON DIOXIDE SELECTED FROM THE GROUP CONSISTING OF SODIUM BICARBONATE, AMMONIUM CARBONATE, AMMONIUM BICARBONATE, AMMONIUM CARBAMATE, HARTSHORN SALT, AMMONIUM CYANATE, UREA AND SUBSTITUTED UREAS, THE QUANTITY OF SAID SUBSTANCE WHICH DECOMPOSES AT ELEVATED TEMPERATURE BEING 10 TO 80% OF SAID ADMIXTURE.
Claim 2
Dependent Claim
86 words
A DRY COMPOSITION OF MATTER COMPRISING A FINELY DIVIDED METAL PHOSPHIDE SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL PHOSPHIDES ALKALINE EARTH METAL PHOSPHIDES AND ALUMINUM PHOSPHIDE IN INTIMATE ADMIXTURE WITH AT LEAST ONE FINELY DIVIDED SUBSTANCE WHICH DECOMPOSES AT RAISED TEMPERATURE WITH EVOLUTION OF CARBON DIOXIDE SELECTED FROM THE GROUP CONSISTING OF SODIUM BICARBONATE, AMMONIUM CARBONATE, AMMONIUM BICARBONATE, AMMONIUM CARBAMATE, HARTSHORN SALT, AMMONIUM CYANATE, UREA AND SUBSTITUTED UREAS, THE QUANTITY OF SAID SUBSTANCE WHICH DECOMPOSES AT ELEVATED TEMPERATURE BEING 10 TO 80% OF SAID ADMIXTURE.
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) | 1961-03-10 | 1961-09-09 | 1962-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-10 | 1965-09-09 | 1966-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-10 | 1969-09-09 | 1970-03-11 | $7700.00 | Window Closed / Lapsed |