Water-insoluble, iron-containing mixed metal, granular material
US9907816B2 · kind B2 · utility
1Cited by
70References
19Claims
0Family size
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Key dates
| Filing date | Jan 22, 2015 |
| Grant date | Mar 6, 2018 |
| Priority date | — |
| Expiry date | Jan 22, 2035 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P7/00
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
There is provided a granular material comprising (i) at least 50% by weight based on the weight of the granular material of solid water-insoluble mixed metal compound capable of binding phosphate of formula (I): MII1-x.MIIIx(OH)2An−y.zH2O (I) where MII is at least one of magnesium, calcium, lanthanum and cerium; MII is at least iron(III); An is at least one n-valent anion; x=Σny, 0<x≦0.67, 0<y≦1, and 0≦z<10; (ii) from 3 to 12% by weight based on the weight of the granular material of non-chemically bound water, and (iii) no greater than 47% by weight based on the weight of the granular material of excipient.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.