Oxidized cellulose microspheres
US11065204B2 · kind B2 · utility
0Cited by
97References
12Claims
0Family size
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Key dates
| Filing date | Aug 14, 2019 |
| Grant date | Jul 20, 2021 |
| Priority date | — |
| Expiry date | Aug 14, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J13/125
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A process for forming microspheres is disclosed. The process includes contacting a solvent with a modified cellulose to form a solution; contacting the modified cellulose solution with at least one bioactive agent to form a discontinuous phase liquid; contacting the discontinuous phase liquid with a continuous phase liquid to form an emulsion; and contacting the emulsion with a third phase liquid to extract the solvent from the emulsion, thereby forming a plurality of modified cellulose microspheres.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.