Patent US3019099A successfully refreshed from Google Patents.
US3019099A
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Manufacture of fluid fertilizer from wet-process phosphoric acid
Assignee: Tennessee Valley Authority
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Filing: 1959-06-10
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Granted: 1962-01-30
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Expires: 1979-06-10
Abstract
No abstract record available.
Inventors
- 👤 Jr Henry K Walters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:37
CPC Classifications
C; C01; C01B; C01B25/00; C01B25/16; C01B25/26; C01B25/38; C01B25/40; C01B25/405; C01B25/28; C05; C05B; C05B7/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A PROCESS FOR THE PRODUCTION OF A STABLE SUSPENSION FERTILIZER OF HIGH SEDIMENTATION VOLUME, LOW VISCOSITY, AND GOOD POUR CHARACTERISTICS WHICH COMPRISES ADDING A STREAM OF AMMONIA TO WET-PROCESS PHOSPHORIC ACID; CONTROLLING THE PROPORTION OF ADDED AMMONIA TO PRODUCE A PH OF 7.5 TO 8.5 IN THE RESULTING SUSPENSION; THEREAFTER INTIMATELY MIXING WET-PROCESS PHOSPHORIC ACID WITH THE SUSPENSION IN PROPORTION TO LOWER THE PH INTO THE RANGE FROM 5.5 TO 7.3; AND WITHDRAWING AS PRODUCT THE RESULTING STABLE SUSPENSION.
Claim 2
Dependent Claim
79 words
A PROCESS FOR THE PRODUCTION OF A STABLE SUSPENSION FERTILIZER OF HIGH SEDIMENTATION VOLUME, LOW VISCOSITY, AND GOOD POUR CHARACTERISTICS WHICH COMPRISES ADDING A STREAM OF AMMONIA TO WET-PROCESS PHOSPHORIC ACID; CONTROLLING THE PROPORTION OF ADDED AMMONIA TO PRODUCE A PH OF 7.5 TO 8.5 IN THE RESULTING SUSPENSION; THEREAFTER INTIMATELY MIXING WET-PROCESS PHOSPHORIC ACID WITH THE SUSPENSION IN PROPORTION TO LOWER THE PH INTO THE RANGE FROM 5.5 TO 7.3; AND WITHDRAWING AS PRODUCT THE RESULTING STABLE SUSPENSION.
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) | 1965-01-29 | 1965-07-31 | 1966-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-29 | 1969-07-31 | 1970-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-29 | 1973-07-31 | 1974-01-30 | $7700.00 | Window Closed / Lapsed |