US2913330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of triple superphosphate
Assignee: Phillips Petroleum Co
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Filing: 1956-06-27
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Granted: 1959-11-17
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Expires: 1976-06-27
Abstract
No abstract record available.
Inventors
- 👤 Joseph F Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:44
CPC Classifications
C; C05; C05B; C05B1/00; C05B1/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A PROCESS FOR THE CONTINUOUS MANUFACTURE OF TRIPLE SUPERPHOSPHATE, COMPRISING, IN COMBINATION, THE STEPS OF PRETREATING PHOSPHATE ROCK WITH A FIRST QUANTITY OF PHOSPHORIC ACID, MIXING THE RESULTING PRETREATED ROCK WITH A SECOND QUANTITY OF PHOSPHORIC ACID, BLENDING SUBSTANTIALLY ALL OF THE RESULTING SOLID GREEN TRIPLE SUPERPHOSPHATE WITH CURED TRIPLE SUPERPHOSPHATE FINES, AND DRYING AND CLASSIFYING THE RESULTING BLEND, SAID FIRST QUANTITY OF PHOSPHORIC ACID BEING AN AMOUNT WITHIN THE RANGE BETWEEN 4 AND 15 WEIGHT PERCENT OF THE TOTAL PHOSPHORIC ACID REQUIRED AND SAID SECOND QUANTITY OF PHOSPHORIC ACID BEING THE BALANCE OF SAID TOTAL PHOSPHORIC ACID REQUIRED TO BRING THE ACIDULATION RATIO UP TO THE DESIRED LEVEL.
Claim 2
Dependent Claim
109 words
A PROCESS FOR THE CONTINUOUS MANUFACTURE OF TRIPLE SUPERPHOSPHATE, COMPRISING, IN COMBINATION, THE STEPS OF PRETREATING PHOSPHATE ROCK WITH A FIRST QUANTITY OF PHOSPHORIC ACID, MIXING THE RESULTING PRETREATED ROCK WITH A SECOND QUANTITY OF PHOSPHORIC ACID, BLENDING SUBSTANTIALLY ALL OF THE RESULTING SOLID GREEN TRIPLE SUPERPHOSPHATE WITH CURED TRIPLE SUPERPHOSPHATE FINES, AND DRYING AND CLASSIFYING THE RESULTING BLEND, SAID FIRST QUANTITY OF PHOSPHORIC ACID BEING AN AMOUNT WITHIN THE RANGE BETWEEN 4 AND 15 WEIGHT PERCENT OF THE TOTAL PHOSPHORIC ACID REQUIRED AND SAID SECOND QUANTITY OF PHOSPHORIC ACID BEING THE BALANCE OF SAID TOTAL PHOSPHORIC ACID REQUIRED TO BRING THE ACIDULATION RATIO UP TO THE DESIRED LEVEL.
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) | 1962-11-16 | 1963-05-18 | 1963-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-16 | 1967-05-18 | 1967-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-16 | 1971-05-18 | 1971-11-17 | $7700.00 | Window Closed / Lapsed |