Polymeric system for drug delivery and solute separation
US6565872B2 · kind B2 · utility
88Cited by
3References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 16, 2000 |
| Grant date | May 20, 2003 |
| Priority date | — |
| Expiry date | Feb 16, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K9/5047
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Described is a composite polymeric system to provide enhanced stimuli-responsiveness. The first aspect provides particles where the particles are made of stimuli-responsive polymer which responds to various stimuli such as temperature and pH change. Incorporated with this particle is a second polymer which in turn is relatively insensitive to stimuli. The invention can be potentially applied to other systems comprising a swellable hydrogel and a nonswellable hydrophobic polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.