Patent US2997367A successfully refreshed from Google Patents.
US2997367A
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Defluorination of phosphatic material
Assignee: International Minerals and Chemical Corp
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Filing: 1956-10-22
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Granted: 1961-08-22
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Expires: 1976-10-22
Abstract
No abstract record available.
Inventors
- 👤 William B Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:49
CPC Classifications
C; C05; C05B; C05B13/00; C05B13/02; C01; C01B; C01B25/00; C01B25/16; C01B25/26; C01B25/32; C01B25/328; Y; Y10; Y10S; Y10S71/00; Y10S71/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
THE IMPROVED PROCESS FOR PRODUCING AN ANIMAL FEED INGREDIENT CONTAINING LESS THAN 0.18% FLUORINE WHICH COMPRISES MIXING COMMINUTED PHOSPHATE ROCK WITH PHOSPHORIC ACID, WITH A SUFFICIENT AMOUNT OF AT LEAST ONE SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF LIMESTONE, CALCIUM NITRATE, CALCIUM FORMATE, AND ALKALI METAL SALTS HAVING AN ANION SELECTED FROM THE GROUP CONSISTING OF CARBONATE, SULFATE, FORMATE AND CHLORIDE, SO THAT FOR THE FINAL PRODUCT THE MOLE RATIO REPRESENTED BY THE FOLLOWING FORMULA IS BETWEEN 3.0 AND 3.8
Claim 2
Dependent Claim
80 words
THE IMPROVED PROCESS FOR PRODUCING AN ANIMAL FEED INGREDIENT CONTAINING LESS THAN 0.18% FLUORINE WHICH COMPRISES MIXING COMMINUTED PHOSPHATE ROCK WITH PHOSPHORIC ACID, WITH A SUFFICIENT AMOUNT OF AT LEAST ONE SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF LIMESTONE, CALCIUM NITRATE, CALCIUM FORMATE, AND ALKALI METAL SALTS HAVING AN ANION SELECTED FROM THE GROUP CONSISTING OF CARBONATE, SULFATE, FORMATE AND CHLORIDE, SO THAT FOR THE FINAL PRODUCT THE MOLE RATIO REPRESENTED BY THE FOLLOWING FORMULA IS BETWEEN 3.0 AND 3.8
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) | 1964-08-21 | 1965-02-20 | 1965-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-21 | 1969-02-20 | 1969-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-21 | 1973-02-20 | 1973-08-22 | $7700.00 | Window Closed / Lapsed |