Patent US3037855A successfully refreshed from Google Patents.
US3037855A
Expired / Lapsed
US
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Process for pebbling by spraying a mixture of ammonium nitrate and ammonium phosphates
Assignee: Honeywell International Inc
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Filing: 1958-05-23
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Granted: 1962-06-05
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Expires: 1978-05-23
Abstract
No abstract record available.
Inventors
- 👤 Joseph A Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:55
CPC Classifications
C; C05; C05B; C05B7/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
THE PROCESS OF PREPARING A MIXED FERTILIZER WHICH COMPRISES AMMONIATING AQUEOUS PHOSPHORIC ACID TO OBTAINA PRODUCT HAVING A PH OF 3,5-7, EVAPORATING THE RESULTANT PRODUCT IN ADMIXTURE WITH AMMONIUM NITRATE IN A LOW RETENTION TIME EVAPORATOR TO A WATER CONTENT OF 0.5-3%, DISPERSING DROPS OF THE CONCENTRATED SLURRY AT AN INITIAL TEMPERATURE OF ABOUT 160-185*C. IN A GASEOUS COOLING MEDIUM AND COOLING THE DISPERSED DROPS TO A TEMPERATURE AT WHICH THEY SOLIDIFY, THE WEIGHT RATIO OF AMMONIUM NITRATE TO AMMONIUM PHOSPHATES IN THE MIXTURE SUBJECTED TO EVAPORATION BEING BETWEEN 0.5 AND 1.2, THE WEIGHT RATIO OF DIAMMONIUM PHOSPHATE TO MONOAMMONIUM PHOSPHATE NOT EXCEEDING 2 TO 1 AND THE TOTAL TIME AT WHICH THE MIXTURE IS HELD AT 160-185*C. IS NOT OVER 10 MINUTES.
Claim 2
Dependent Claim
123 words
THE PROCESS OF PREPARING A MIXED FERTILIZER WHICH COMPRISES AMMONIATING AQUEOUS PHOSPHORIC ACID TO OBTAINA PRODUCT HAVING A PH OF 3,5-7, EVAPORATING THE RESULTANT PRODUCT IN ADMIXTURE WITH AMMONIUM NITRATE IN A LOW RETENTION TIME EVAPORATOR TO A WATER CONTENT OF 0.5-3%, DISPERSING DROPS OF THE CONCENTRATED SLURRY AT AN INITIAL TEMPERATURE OF ABOUT 160-185*C. IN A GASEOUS COOLING MEDIUM AND COOLING THE DISPERSED DROPS TO A TEMPERATURE AT WHICH THEY SOLIDIFY, THE WEIGHT RATIO OF AMMONIUM NITRATE TO AMMONIUM PHOSPHATES IN THE MIXTURE SUBJECTED TO EVAPORATION BEING BETWEEN 0.5 AND 1.2, THE WEIGHT RATIO OF DIAMMONIUM PHOSPHATE TO MONOAMMONIUM PHOSPHATE NOT EXCEEDING 2 TO 1 AND THE TOTAL TIME AT WHICH THE MIXTURE IS HELD AT 160-185*C. IS NOT OVER 10 MINUTES.
References Cited (Backward Citations)
US2025916A
Cited
US1999026A
Cited
US2614040A
Cited
US2680680A
Cited
US2774660A
Cited
US2939781A
Cited
US2957763A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-06-04 | 1965-12-04 | 1966-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-04 | 1969-12-04 | 1970-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-04 | 1973-12-04 | 1974-06-05 | $7700.00 | Window Closed / Lapsed |