US3074780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acidic phosphatic solutions
Assignee: International Minerals and Chemical Corp
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Filing: 1960-07-05
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Granted: 1963-01-22
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Expires: 1980-07-05
Abstract
No abstract record available.
Inventors
- 👤 Donald J Smalter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:52
CPC Classifications
C; C01; C01B; C01B25/00; C01B25/16; C01B25/18; C01B25/234; C01B25/2343; Y; Y10; Y10S; Y10S71/00; Y10S71/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
183 words
A METHOD FORR DEFLUORINATING A FLUORINE-CONTAINING AQUEOUS ACIDIC PHOSPHATIC SOLUTION CONTAINING AT LEAST 48% BY WEIGHT OF P2O5 AND MORE THAN ABOUT 0.5% BY WEIGHT OF FLUORINE WHICH RENDERS THE ACID UNSUITABLE FOR USE IN THE MANUFACTURE OF ANIMAL FEEDS, WHICH COMPRISES INTRODUCING A STREAM OF STEAM INTO AN INITIALLY SUBSTANTIALLY EMPTY LIQUID-STEAM CONTACTING ZONE AND SUBSTANTIALLY SIMULTANEOUSLY INTRODUCING A STREAM OF SAID ACIDIC PHOSPHATIC SOLUTION INTO CONTACT WITH SAID STEAM, SAID STEAM BEING EMPLOYED AT A PREDETERMINED RATE AND TEMPERATURE TO BOIL SAID ACIDIC PGOSPHATIC SOLUTION, AND CONTINUING TO CONTACT ACIDIC PHOSPHATIC SOLUTION WITH STEAM AT A PREDETERMINED RATE AND TEMPERATURE TO BOIL THE ACIDIC PHOSPHATIC SOLUTION FOR A TIME PERIOD REQUISITE TO REDUCE THE FLUORINE CONTENT TO A LEVEL AT WHICH THE DEFLUORINATED ACIDIC PHOSPHATIC SOLUTION IS CHARACTERIZED BY A P/F WEIGHT RATIO OF AT LEAST ABOUT 50 AND IS SUITTABLE FOR USE IN THE MANUFACTURE OF ANIMAL FEEDS, THE TOTAL AMOUNT OF STEAM INTRODUCED BEING GREATER THAN 1.25 POUNDS OF STEAM PER POUND OF P2O5 IN THE ACIDIC PHOSPHATIC SOLUTION BEING DEFLUORINATED, AND THEREAFTER RECOVERING THE DEFLUORINATED ACIDIC PHOSPHATIC SOLUTION.
Claim 2
Independent Claim
183 words
A METHOD FORR DEFLUORINATING A FLUORINE-CONTAINING AQUEOUS ACIDIC PHOSPHATIC SOLUTION CONTAINING AT LEAST 48% BY WEIGHT OF P2O5 AND MORE THAN ABOUT 0.5% BY WEIGHT OF FLUORINE WHICH RENDERS THE ACID UNSUITABLE FOR USE IN THE MANUFACTURE OF ANIMAL FEEDS, WHICH COMPRISES INTRODUCING A STREAM OF STEAM INTO AN INITIALLY SUBSTANTIALLY EMPTY LIQUID-STEAM CONTACTING ZONE AND SUBSTANTIALLY SIMULTANEOUSLY INTRODUCING A STREAM OF SAID ACIDIC PHOSPHATIC SOLUTION INTO CONTACT WITH SAID STEAM, SAID STEAM BEING EMPLOYED AT A PREDETERMINED RATE AND TEMPERATURE TO BOIL SAID ACIDIC PGOSPHATIC SOLUTION, AND CONTINUING TO CONTACT ACIDIC PHOSPHATIC SOLUTION WITH STEAM AT A PREDETERMINED RATE AND TEMPERATURE TO BOIL THE ACIDIC PHOSPHATIC SOLUTION FOR A TIME PERIOD REQUISITE TO REDUCE THE FLUORINE CONTENT TO A LEVEL AT WHICH THE DEFLUORINATED ACIDIC PHOSPHATIC SOLUTION IS CHARACTERIZED BY A P/F WEIGHT RATIO OF AT LEAST ABOUT 50 AND IS SUITTABLE FOR USE IN THE MANUFACTURE OF ANIMAL FEEDS, THE TOTAL AMOUNT OF STEAM INTRODUCED BEING GREATER THAN 1.25 POUNDS OF STEAM PER POUND OF P2O5 IN THE ACIDIC PHOSPHATIC SOLUTION BEING DEFLUORINATED, AND THEREAFTER RECOVERING THE DEFLUORINATED ACIDIC PHOSPHATIC SOLUTION.
References Cited (Backward Citations)
US2962357A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-21 | 1966-07-23 | 1967-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-21 | 1970-07-23 | 1971-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-21 | 1974-07-23 | 1975-01-22 | $7700.00 | Window Closed / Lapsed |