Process for generating multilayered particles
US6740336B2 · kind B2 · utility
35Cited by
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5Claims
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Key dates
| Filing date | Oct 4, 2002 |
| Grant date | May 25, 2004 |
| Priority date | — |
| Expiry date | Oct 4, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K48/0008
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
We describe a process for generating multilayer particles comprising condensing a polymer with an oppositely charged polymer to form a particle and sequentially adding oppositely charged polymers to the particle forming at least three layers of polymers. The process is used to form a composition for delivering a biologically active compound to a cell.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.