Process for producing polymeric microparticles, microparticles produced by said process and the use of such particles in medical diagnostics
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United States of America Patent
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Oct 22, 2002
Grant Date -
N/A
app pub date -
Mar 9, 1998
filing date -
Mar 14, 1995
priority date (Note) -
Expired
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Abstract
The invention relates to a process for the production of gaseous microparticles for ultrasonic diagnosis, whose wall material is built up from polyesters of .alpha.-, .beta.- or .gamma.- hydroxycarboxylic acids, particles that are produced according to this process, as well as their use in medical diagnosis.
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