Composition comprising low density microspheres

Details Composition comprising low density microspheres Composition comprising low density microspheres

2008-03-18

2008-03-18

Hartley, Michael G. (Department: 1618)

Drug, bio-affecting and body treating compositions

In vivo diagnosis or in vivo testing

X-ray contrast imaging agent

C424S489000, C424S501000, C424S009520, C516S011000, C516S077000, C428S502000

Reexamination Certificate

active

11252659

ABSTRACT:
Low density microspheres, methods for preparing same, and use of same as contrast agents are described. The microspheres have a void which contains a gas or the vapor of a volatile liquid selected from the group consisting of aliphatic hydrocarbons, chlorofluorocarbons, tetraalkyl silanes and perfluorocarbons.

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