The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Aug. 10, 2004

Filed:

Oct. 25, 2002
Applicant:
Inventor:

Evan C. Unger, Tucson, AZ (US);

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61B 8/00 ; A61K 9/50 ; B01F 1/700 ;
U.S. Cl.
CPC ...
A61B 8/00 ; A61K 9/50 ; B01F 1/700 ;
Abstract

Low density microspheres, methods for preparing same, and use of same as contrast agents are described. The microspheres have a void having a volume that comprises at least about 75% of the total volume of the microspheres, and 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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