Method of making polymeric gas or air filled microballoons for ultrasonic echography
US5711933A · kind A · utility
141Cited by
11References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 10, 1994 |
| Grant date | Jan 27, 1998 |
| Priority date | — |
| Expiry date | Aug 10, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K49/223
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Method of making gas or air filled microballoons having a mean size in the range of 0.5 to 1000 microns bounded by a 50 to 500 nm thick biodegradable, interfacially deposited, synthetic polymer membrane which is deformable and resilient for use in ultrasonic contrast compositions are described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.