Material to form a hydrogel
US11045575B2 · kind B2 · utility
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2References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 11, 2020 |
| Grant date | Jun 29, 2021 |
| Priority date | — |
| Expiry date | Jun 11, 2040 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L2400/04
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A soft film, a sponge, or a sheet in the dried state is provided, which is capable of forming a hydrogel absorbing water or blood. The film is obtainable by preparing a film-state material in the dried state from either a solution of poly(acrylic acid) or a solution of polyvinylpyrrolidone, and bringing the film-state material into contact with the other remaining solution, and then drying or freeze-drying it.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.