US9592253 — Extended use zirconium silicate compositions and methods of use thereof
Method of Use · Assigned to ZS Pharma Inc · Expires 2035-10-14 · 9y remaining
What this patent protects
This patent protects methods of manufacturing zirconium silicate with low lead content for extended use.
USPTO Abstract
The present invention relates to zirconium silicate compositions having a lead content that is below 0.6 ppm and methods of manufacturing zirconium silicate at reactor volumes exceeding 200-L with a lead content below 1.1 ppm. The lead content of the zirconium silicate of this invention are within the levels that are considered acceptable for extended use given the dose requirements for zirconium silicate.
Drugs covered by this patent
FDA Patent Use Codes
When a patent is method-of-use, FDA lists it once per applicable indication ("U-code"). Each U-code carves out a specific therapeutic use that generic filers must either license or design around.
| Code | Description | Drug |
|---|---|---|
U-2312 |
— | sodium-zirconium-cyclosilicate |
U-2312 |
— | sodium-zirconium-cyclosilicate |
Bibliographic data sourced from FDA Orange Book + USPTO public records. Plain-English summary generated by AI grounded in source text. Patent term extensions (PTR, SPC, pediatric) may shift the effective expiry. Not legal advice.
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