Composition, preparation, and use of chitosan shards for biomedical applications
US9414967B2 · kind B2 · utility
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38References
14Claims
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Key dates
| Filing date | Jan 8, 2016 |
| Grant date | Aug 16, 2016 |
| Priority date | — |
| Expiry date | Jan 8, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L5/08
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A thin chitosan-based material can be used for biomedical applications. The chitosan has been treated in a nitrogen field by applying energy to ionize nitrogen in and around the chitosan material. A single or multiple such treatments may be employed. For example, the chitosan material may be irradiated under nitrogen using γ-irradiation, treated under a nitrogen plasma, or both. A thin chitosan material can be readily treated by surface modifying treatments such as irradiating under nitrogen using γ-irradiation, treating under a nitrogen plasma, or both.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.