US3558749A
Expired / Lapsed
US
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Method for the production of the ammonium nitrate component of an nh4no3-containing explosive of high detonation speed
Assignee: Osterreichische Stickstoffwerke AG
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Filing: 1968-07-05
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Granted: 1971-01-26
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Expires: 1988-07-05
Abstract
Abstract THE AMMONIUM NITRATE COMPONENT OF AN OIL- AND NH4N03-CONTAINING EXPLOSIVE OF HIGH DETONATION SPEED IS MANUFACTURED FROM AN INADEQUATELY POROUS COMMERCIAL FORM OF AMMONIUM NITRATE BY GRINDING THE LATTER, SEPARATING FROM THE GROUND MATERIAL THE FRACTION HAVING A PARTICLE SIZE OF FROM 0.05 TO 0.125 MM., COMPRESSING THIS FRACTION INTO A MASS HAVING AN "OPEN POROSITY" OF AT LEAST 10% BY WEIGHT, COMMINUTING THE RESULTANT POROUS MASS, AND SEPARATING OUT THE FRACTION HAVING A PARTICLE SIZE OF FROM 0.5 TO 2MM. THE LATTER IS SUBSEQUENTLY HALFFILLED BY IMPREGNATION WITH OIL SUCH AS DIESEL OIL OR SPINDLE OIL.
Inventors
- 👤 Viktor Rank
- 👤 Hans Tentschert
- 👤 Harald Junker
- 👤 Kurt Allgeuer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:23
CPC Classifications
C; C06; C06B; C06B31/00; C06B31/28; C06B31/285; Y; Y10; Y10S; Y10S149/00; Y10S149/11; Y10S149/112
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |