Granted Patent
Utility
US 5,837,221 · App. 08/681,710
Polymer-lipid microencapsulated gases for use as imaging agents
Inventors:
Howard Bernstein, Julie Straub, Henry T. Brush, Charles C. Church
Patented Case
View Patent ↗
Granted: Nov 17, 1998
Filed: Jul 29, 1996
Inventors
Howard Bernstein
Julie Straub
Henry T. Brush
Charles C. Church
Assignee (at issue)
Acusphere, Inc.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.