Hydrogel particles
US8222193B2 · kind B2 · utility
6Cited by
5References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2007 |
| Grant date | Jul 17, 2012 |
| Priority date | — |
| Expiry date | Dec 8, 2027 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/412
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention relates to hydrogel particles containing bubbles and having a specific gravity of 0.7 to 1.00 and an average particle diameter of 50 to 500 μm, as well as a process for producing the same. The hydrogel particles may also contain hollow inorganic particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.