US3091626A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making ferrous citrate
Assignee: Catalent Pharma Solutions Inc
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Filing: 1960-06-20
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Granted: 1963-05-28
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Expires: 1980-06-20
Abstract
No abstract record available.
Inventors
- 👤 Gustav H Carlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:50
CPC Classifications
C; C07; C07F; C07F15/00; C07F15/02; C07F15/025; A; A61; A61K; A61K31/00; A61K31/28; A61K31/295; A61K33/00; A61K33/24; A61K33/26; C07C; C07C51/00; C07C51/16; C07C51/21; C07C51/255; C07C51/265; C07C51/41; C07C51/412; C07C59/00; C07C59/235; C07C59/245; C07C59/265
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A METHOD FOR PREPARING FERROUS CITRATE HAVING THE EMPIRICAL FORMULA C6H8O8FE WHICH COMPRISES MIXING CITRIC ACID WITH AN AQUEOUS SOLUTION OF A FERROUS SALT TAKEN FROM THE GROUP CONSISTING OF FERROUS SULFATE, FERROUS ACETATE, FERROUS AMMONIUM SULFATE, AND FERROUS PROPIONATE, HEATING THE MIXTURE FOR A SUFFICIENT TIME TO FORM AND PRECIPITATE FERROUS CITRATE WHILE MAINTAINING THE PH OF THE MIXTURE BETWEEN 2 AND 4 AND SEPARATING THE PRECIPITATE FROM THE SOLUTION.
Claim 2
Independent Claim
71 words
A METHOD FOR PREPARING FERROUS CITRATE HAVING THE EMPIRICAL FORMULA C6H8O8FE WHICH COMPRISES MIXING CITRIC ACID WITH AN AQUEOUS SOLUTION OF A FERROUS SALT TAKEN FROM THE GROUP CONSISTING OF FERROUS SULFATE, FERROUS ACETATE, FERROUS AMMONIUM SULFATE, AND FERROUS PROPIONATE, HEATING THE MIXTURE FOR A SUFFICIENT TIME TO FORM AND PRECIPITATE FERROUS CITRATE WHILE MAINTAINING THE PH OF THE MIXTURE BETWEEN 2 AND 4 AND SEPARATING THE PRECIPITATE FROM THE SOLUTION.
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) | 1966-05-27 | 1966-11-26 | 1967-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-27 | 1970-11-26 | 1971-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-27 | 1974-11-26 | 1975-05-28 | $7700.00 | Window Closed / Lapsed |