Adsorbent for oral administration
US7651974B2 · kind B2 · utility
6Cited by
1References
10Claims
0Family size
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Key dates
| Filing date | Sep 24, 2004 |
| Grant date | Jan 26, 2010 |
| Priority date | — |
| Expiry date | Apr 4, 2026 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P31/12
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
An adsorbent for oral administration, characterized by comprising a surface-modified spherical activated carbon, having a diameter of 0.01 to 1 mm, a specific surface area determined by Langmuir's adsorption equation of 1000 m2/g or more, a total amount of acidic groups of 0.40 to 1.00 meq/g, a total amount of basic groups of 0.40 to 1.10 meq/g, and a diffraction intensity ratio, an R value, determined by equation (1) of 1.4 or more. The adsorbents for oral administration exhibit a useful selective adsorbability; that is, a lesser adsorbability of useful substances, and a greater adsorbability of toxic substances, in a body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.