Physiologically active substance carrier
US12138346B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Sep 14, 2023 |
| Grant date | Nov 12, 2024 |
| Priority date | — |
| Expiry date | Sep 14, 2043 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/12
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A bioactive substance delivery system includes a bioactive substance comprising nucleic acid, and a bioactive substance carrier comprising a porous silica particle having a plurality of pores with a diameter of 5 nm to 100 nm, and having not less than 24 hours at which a ratio of absorbance is ½. The porous silica particles may be positively charged inside the pore at neutral pH.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.