US2912318A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making mixed fertilizers containing ammonium nitrate and calcium carbonate
Assignee: Commercial Solvents Corp
•
Filing: 1957-01-16
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Granted: 1959-11-10
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Expires: 1977-01-16
Abstract
No abstract record available.
Inventors
- 👤 Homer E Kieweg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:11
CPC Classifications
C; C05; C05C; C05C1/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
IN A PROCESS FOR THE PRODUCTION OF A GRANULAR MIXED FERTILIZER BY INTRODUCING SOLID CALCIUM CARBONATE PARTICLE INTO MOLTEN SUBSTANTIALLY ANHYDROUS AMMONIUM NITRATE UNDER SUCH CONDITIONS THAT THE RESULTING MIXTURE IS A SLURRY OF SOLID CALCIUM CARBONATE PARTICLES IN MOLTEN AMMONIUM NITRATE, THE IMPROVEMENT WHICH COMPRISES REDUCING THE DECOMPOSITION OF AMMONIUM NITRATE FOLLOWING MIXING OF SAID SOLID CALCIUM CARBONATE PARTICLES IN SAID MOLTEN AMMONIUM NITRATE BY MIXING THE SOLID CALCIUM CARBONATE WITH THE MOLTEN AMMONIUM NITRATE IN THE PRESENCE OF AT LEAST ABOUT 1% OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF AMMONIUM MONOHYDROGEN PHOSPHATE AND POTASSIUM MONOHYDROGEN PHOSPHATE.
Claim 2
Dependent Claim
100 words
IN A PROCESS FOR THE PRODUCTION OF A GRANULAR MIXED FERTILIZER BY INTRODUCING SOLID CALCIUM CARBONATE PARTICLE INTO MOLTEN SUBSTANTIALLY ANHYDROUS AMMONIUM NITRATE UNDER SUCH CONDITIONS THAT THE RESULTING MIXTURE IS A SLURRY OF SOLID CALCIUM CARBONATE PARTICLES IN MOLTEN AMMONIUM NITRATE, THE IMPROVEMENT WHICH COMPRISES REDUCING THE DECOMPOSITION OF AMMONIUM NITRATE FOLLOWING MIXING OF SAID SOLID CALCIUM CARBONATE PARTICLES IN SAID MOLTEN AMMONIUM NITRATE BY MIXING THE SOLID CALCIUM CARBONATE WITH THE MOLTEN AMMONIUM NITRATE IN THE PRESENCE OF AT LEAST ABOUT 1% OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF AMMONIUM MONOHYDROGEN PHOSPHATE AND POTASSIUM MONOHYDROGEN PHOSPHATE.
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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) | 1962-11-09 | 1963-05-11 | 1963-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-09 | 1967-05-11 | 1967-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-09 | 1971-05-11 | 1971-11-10 | $7700.00 | Window Closed / Lapsed |