Granted Patent
Utility
US 6,479,034 · App. 09/118,329
Method of preparing gas and gaseous precursor-filled microspheres
Inventors:
Evan C. Unger, Thomas A. Fritz, Terry Matsunaga, VaradaRajan Ramaswami, David Yellowhair, Guanli Wu
Patented Case
View Patent ↗
Granted: Nov 12, 2002
Filed: Jul 17, 1998
Inventors
Evan C. Unger
Thomas A. Fritz
Terry Matsunaga
VaradaRajan Ramaswami
David Yellowhair
Guanli Wu
Assignee (at issue)
Bristol Myers Squibb Medical Imaging, 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.