US2879133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anticaking-agent for ammonium nitrate
Assignee: Standard Oil Co
•
Filing: 1952-12-31
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Granted: 1959-03-24
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Expires: 1972-12-31
Abstract
No abstract record available.
Inventors
- 👤 Jr Paul O Marti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:58
CPC Classifications
C; C01; C01C; C01C1/00; C01C1/18; Y; Y10; Y10S; Y10S149/00; Y10S149/11; Y10S149/112
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
AMMONIUM NITRATE PARTICLES COATED WITH A COMMINUTED "H2S TREATED IRON-FERROCYANIDE" WHICH PARTICLES ARE CHARACTERIZED BY SUBSTANTIALLY FREE-FLOWABILITY AT ATMOSPHERIC HUMIDITY AND BY A STORAGE STABILITY SUBSTANTIALLY THAT OF DYNAMITE GRADE AMMONIUM NITRATE, WHICH "H2S TREATED IRON-FERROCYANIDE" IS PREPARED BY CONTACTING IRON-FERROCYANIDE WITH HYDROGEN SULFIDE GAS AT A TEMPERATURE BETWEEN ABOUT +20* AND ABOUT +65*C. FOR A TIME SUFFICIENT TO PRODUCE A SOLID REACTION PRODUCT CONTAINING BETWEEN ABOUT 2 AND ABOUT 7 WEIGHT PERCENT OF SULFUR.
Claim 2
Dependent Claim
75 words
AMMONIUM NITRATE PARTICLES COATED WITH A COMMINUTED "H2S TREATED IRON-FERROCYANIDE" WHICH PARTICLES ARE CHARACTERIZED BY SUBSTANTIALLY FREE-FLOWABILITY AT ATMOSPHERIC HUMIDITY AND BY A STORAGE STABILITY SUBSTANTIALLY THAT OF DYNAMITE GRADE AMMONIUM NITRATE, WHICH "H2S TREATED IRON-FERROCYANIDE" IS PREPARED BY CONTACTING IRON-FERROCYANIDE WITH HYDROGEN SULFIDE GAS AT A TEMPERATURE BETWEEN ABOUT +20* AND ABOUT +65*C. FOR A TIME SUFFICIENT TO PRODUCE A SOLID REACTION PRODUCT CONTAINING BETWEEN ABOUT 2 AND ABOUT 7 WEIGHT PERCENT OF SULFUR.
References Cited (Backward Citations)
US286132A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-23 | 1962-09-22 | 1963-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-23 | 1966-09-22 | 1967-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-23 | 1970-09-22 | 1971-03-24 | $7700.00 | Window Closed / Lapsed |