Patent US3244568A successfully refreshed from Google Patents.
US3244568A
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Production of particulate ammonium nitrate-fuel oil explosive
Assignee: Imperial Chemical Industries Ltd
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Filing: 1963-08-23
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Granted: 1966-04-05
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Expires: 1983-08-23
Abstract
No abstract record available.
Inventors
- 👤 Campbell George Reid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:38
CPC Classifications
C; C01; C01C; C01C1/00; C01C1/18; C06; C06B; C06B47/00; C06B47/14; F; F02; F02B; F02B3/00; F02B3/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A PROCESS FOR THE PRODUCTION OF AN EXPLOSIVE COMPOSITION WHICH COMPRISES: (A) MIXING SUBSTANTIALLY DRY AMMONIUM NITRATE GRAINS WITH AN AQUEOUS AMMONIUM NITRATE SOLUTION IN PROPORTIONS SUCH THAT THE WATER CONTENT OF THE MIXTURE IS NOT MORE THAN 10% BY WEIGHT, AT A TEMPERATURE BELOW THE FUSION TEMPERATURE OF THE MIXTURE AND FOR A TIME SUFFICIENT TO DISSOLVE A SURFACE PORTION OF THE GRAINS, (B) THEREAFTER DRYING THE RESULTING MIXTURE WITH A HOT DRYING MEDIUM UNDER CONDITIONS WHICH PRECLUDE COMPLETE DISSOLUTION OF THE GRAINS, AND (C) THEREAFTER IMPREGNATING THE DRIED MIXTURE WITH FROM ABOUT 5 TO 10% BY WEIGHT OF FUEL OIL.
Claim 2
Dependent Claim
102 words
A PROCESS FOR THE PRODUCTION OF AN EXPLOSIVE COMPOSITION WHICH COMPRISES: (A) MIXING SUBSTANTIALLY DRY AMMONIUM NITRATE GRAINS WITH AN AQUEOUS AMMONIUM NITRATE SOLUTION IN PROPORTIONS SUCH THAT THE WATER CONTENT OF THE MIXTURE IS NOT MORE THAN 10% BY WEIGHT, AT A TEMPERATURE BELOW THE FUSION TEMPERATURE OF THE MIXTURE AND FOR A TIME SUFFICIENT TO DISSOLVE A SURFACE PORTION OF THE GRAINS, (B) THEREAFTER DRYING THE RESULTING MIXTURE WITH A HOT DRYING MEDIUM UNDER CONDITIONS WHICH PRECLUDE COMPLETE DISSOLUTION OF THE GRAINS, AND (C) THEREAFTER IMPREGNATING THE DRIED MIXTURE WITH FROM ABOUT 5 TO 10% BY WEIGHT OF FUEL OIL.
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) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |