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Claims for Patent: 8,338,642

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Claims for Patent: 8,338,642

Title:Ferric organic compounds, uses thereof and methods of making same
Abstract: The present invention discloses a novel form of ferric organic compounds, including a form of ferric citrate, which are soluble over a wider range of pH, and which have a large active surface area. The ferric organic compounds of the present invention can be delivered effectively by oral route with better delivery to treat patients suffering from hyperphosphatemia, metabolic acidosis and other disorders responsive to ferric organic compound therapy.
Inventor(s): Kwok; David W. K. (Vancouver, CA), Stoynov; Nikolay Mintchev (Vancouver, CA)
Assignee: Panion & BF Biotech, Inc. (TW)
Application Number:12/711,679
Patent Claims: 1. Ferric citrate having a BET active surface area greater than 16 sq. m/g.

2. The ferric citrate of claim 1, having an intrinsic dissolution rate of 1.88-4.0 mg/cm.sup.2/min.

3. The ferric citrate of claim 2, wherein the BET active surface area ranges from 16 sq. m/g. to 20 sq. m/g.

4. The ferric citrate of claim 1, having the formula C.sub.6H.sub.5O.sub.7Fe.

5. The ferric citrate of claim 1, which is in an orally administrable form.

6. The ferric citrate of claim 5, wherein the orally administrable form is selected from a tablet, a powder, a suspension, an emulsion, a capsule, a granule, a troche, a pill, a liquid, a spirit and a syrup.

7. The ferric citrate of claim 5, wherein the orally administrable form is a tablet.

8. A method of treating hyperphosphatemia comprising administering ferric citrate having a BET active surface area greater than 16 sq. m/g. to a patient in need of such treatment.

9. A method of treating metabolic acidosis comprising administering ferric citrate having a BET active surface area greater than 16 sq. m/g. to a patient in need of such treatment.

10. A pharmaceutical composition comprising ferric citrate having a BET active surface area greater than 16 sq. m/g and a suitable carrier.

11. The pharmaceutical composition of claim 10, wherein the ferric citrate has an intrinsic dissolution rate of 1.9-4.0 mg/cm.sup.2/min.

12. The pharmaceutical composition of claim 10, wherein the BET active surface area ranges from 16 sq. m/g. to 20 sq. m/g.

13. The pharmaceutical composition of claim 10, wherein the ferric citrate has the formula C.sub.6H.sub.5O.sub.7Fe.

14. The pharmaceutical composition of claim 10, wherein said composition is in an orally administrable form.

15. The pharmaceutical composition of claim 14, wherein the orally administrable form is selected from a tablet, a powder, a suspension, an emulsion, a capsule, a granule, a troche, a pill, a liquid, a spirit and a syrup.

16. The pharmaceutical composition of claim 14, wherein the orally administrable form is a tablet.

17. A method of treating hyperphosphatemia comprising administering a pharmaceutical composition comprising ferric citrate having a BET active surface area greater than 16 sq. m/g. and a suitable carrier to a person in need of such treatment.

18. A method of treating metabolic acidosis comprising administering a pharmaceutical composition comprising ferric citrate having a BET active surface area greater than 16 sq. m/g. and a suitable carrier to a person in need of such treatment.
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