Microparticles useful as ultrasonic contrast agents
US6193951A · kind A · utility
62Cited by
19References
41Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 30, 1998 |
| Grant date | Feb 27, 2001 |
| Priority date | — |
| Expiry date | Apr 30, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K49/225
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Microparticles are provided comprising a shell of an outer layer of a biologically compatible material and an inner layer of biodegradable polymer. The core of the microparticles contain a gas, liquid or solid for use in drug delivery or as a contrast agent for ultrasonic contrast imaging. The microparticles are capable of passing through the capillary systems of a subject.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.