US2965471A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for producing mixed fertilizers
Assignee: JBS USA LLC
•
Filing: 1955-04-01
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Granted: 1960-12-20
•
Expires: 1975-04-01
Abstract
No abstract record available.
Inventors
- 👤 Derrick H Stassfort
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:33
CPC Classifications
C; C05; C05C; C05C3/00; C05B; C05B1/00; C05B1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
IN THE PROCESS FOR THE MANUFACTURE OF MIXED FERTILIZERS THE IMPROVEMENT WHICH COMPRISES: CONTINUOUSLY PASSING STREAMS OF CONCENTRATED MINERAL ACID AND AMMONIACAL SUBSTANCES INTO A SUBSTANTIALLY CLOSED REACTION ZONE BENEATH THE SURFACE OF A BED OF FERTILIZER MATERIAL, CONTACTING SAID SUBSTANCES WITHIN SAID REACTION ZONE WHEREBY TO REACT EACH WITH THE OTHER AND TO SECURE SUBSTANTIALLY COMPLETE ABSORPTION OF SAID AMMONIACAL SUBSTANCE, ALLOWING SUBSTANTIALLY THE ENTIRETY OF THE HEAT AND PRODUCES FORMED BY SAID REACTION TO IMMEDIATELY PASS FROM SAID REACTION ZONE TO DIRECTLY CONTACT SAID FERTILIZER MATERIAL AND ADMIXING SAID REACTION PRODUCTS WITH SAID FERTILIZER MATERIAL WHEREBY TO OBTAIN SUBSTANTIALLY COMPLETE AB SORPTION OF ANY UNREACTED AMMONIACAL SUBSTANCE AND TO FURTHER DRY SAID FERTILIZER MATERIAL.
Claim 2
Dependent Claim
116 words
IN THE PROCESS FOR THE MANUFACTURE OF MIXED FERTILIZERS THE IMPROVEMENT WHICH COMPRISES: CONTINUOUSLY PASSING STREAMS OF CONCENTRATED MINERAL ACID AND AMMONIACAL SUBSTANCES INTO A SUBSTANTIALLY CLOSED REACTION ZONE BENEATH THE SURFACE OF A BED OF FERTILIZER MATERIAL, CONTACTING SAID SUBSTANCES WITHIN SAID REACTION ZONE WHEREBY TO REACT EACH WITH THE OTHER AND TO SECURE SUBSTANTIALLY COMPLETE ABSORPTION OF SAID AMMONIACAL SUBSTANCE, ALLOWING SUBSTANTIALLY THE ENTIRETY OF THE HEAT AND PRODUCES FORMED BY SAID REACTION TO IMMEDIATELY PASS FROM SAID REACTION ZONE TO DIRECTLY CONTACT SAID FERTILIZER MATERIAL AND ADMIXING SAID REACTION PRODUCTS WITH SAID FERTILIZER MATERIAL WHEREBY TO OBTAIN SUBSTANTIALLY COMPLETE AB SORPTION OF ANY UNREACTED AMMONIACAL SUBSTANCE AND TO FURTHER DRY SAID FERTILIZER MATERIAL.
References Cited (Backward Citations)
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US2035981A
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US2047393A
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US2375558A
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US2699378A
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US2755176A
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US2729554A
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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) | 1963-12-20 | 1964-06-20 | 1964-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-20 | 1968-06-20 | 1968-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-20 | 1972-06-20 | 1972-12-20 | $7700.00 | Window Closed / Lapsed |