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.
Patent No.:
Date of Patent:
Jul. 19, 2005
Filed:
May. 17, 2002
Applicant:
Robert E. Short, Los Gatos, CA (US);
Inventor:
Robert E. Short, Los Gatos, CA (US);
Assignee:
Point Biomedical Corporation, San Carlos, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61B008/00 ; A61K009/50 ; B01F017/00 ;
U.S. Cl.
CPC ...
Abstract
A method is provided to prepare gas-filled, porous microparticles having a polymer matrix interior which are useful as ultrasound echogenic contrast agents. An oil-in-water suspension is formed, both phases are frozen, then the aqueous and nonaqueous frozen phases are removed by sublimation. The resulting porous microparticles can receive a gas and be used as an ultrasound contrast agent.