Patent US2616787A successfully refreshed from Google Patents.
US2616787A
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Free-flowing ammonium nitrate and method for the production of same
Assignee: Imperial Chemical Industries Ltd
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Filing: 1950-03-23
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Granted: 1952-11-04
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Expires: 1970-03-23
Abstract
No abstract record available.
Inventors
- 👤 Whetstone John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:54
CPC Classifications
A; A45; A45C; A45C13/00; A45C13/02; A45C13/03; C; C01; C01C; C01C1/00; C01C1/18; C05; C05C; C05C1/00; C05C1/02; C06; C06B; C06B21/00; C06B21/0033; C06B21/0066; C06B23/00; C06B23/002; C06B45/00; F; F42; F42B; F42B5/00; F42B5/02; F42B5/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A FREE FLOWING AMMONIUM NITRATE COMPRISING CRYSTALS OF AMMONIUM NITRATE CONTAINING PER 100 PARTS OF AMMONIUM NITRATE, FROM .01 TO 1.0 PART OF AT LEAST ONE SULPHONATED AROMATIC DYESTUFF PREDOMINANTLY DISTRIBUTED ON THE SURFACE OF SAID CRYSTALS WHICH IS SOLUBLE TO THE EXTENT OF AT LEAST .05% IN A SATURATED AQUEOUS AMMOMIUM NITRATE SOLUTION AT 20* C. AND WHICH IN SOLUTION IN A SATURATED AQUEOUS SOLUTION OF AMMONIUM NITRATE AT 20* C., CONDITIONS SAID SOLUTION TO PRODUCE ON CRYSTALLIZATION IN THE TEMPERATURE RANGE IN WHICH THE STABLE FORM OF AMMONIUM NITRATE IS AMMONIUM NITRATE IV, CRYSTALS OF AMMONIUM NITRATE IV AS (010) PRISMS, LATHS, PLATES OR SCALES.
Claim 2
Dependent Claim
107 words
A FREE FLOWING AMMONIUM NITRATE COMPRISING CRYSTALS OF AMMONIUM NITRATE CONTAINING PER 100 PARTS OF AMMONIUM NITRATE, FROM .01 TO 1.0 PART OF AT LEAST ONE SULPHONATED AROMATIC DYESTUFF PREDOMINANTLY DISTRIBUTED ON THE SURFACE OF SAID CRYSTALS WHICH IS SOLUBLE TO THE EXTENT OF AT LEAST .05% IN A SATURATED AQUEOUS AMMOMIUM NITRATE SOLUTION AT 20* C. AND WHICH IN SOLUTION IN A SATURATED AQUEOUS SOLUTION OF AMMONIUM NITRATE AT 20* C., CONDITIONS SAID SOLUTION TO PRODUCE ON CRYSTALLIZATION IN THE TEMPERATURE RANGE IN WHICH THE STABLE FORM OF AMMONIUM NITRATE IS AMMONIUM NITRATE IV, CRYSTALS OF AMMONIUM NITRATE IV AS (010) PRISMS, LATHS, PLATES OR SCALES.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-04 | 1956-05-05 | 1956-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-04 | 1960-05-05 | 1960-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-04 | 1964-05-05 | 1964-11-04 | $7700.00 | Window Closed / Lapsed |