Granted Patent
Utility
US 5,423,319 · App. 08/260,391
Integrated impedance matching layer to acoustic boundary problems for clinical ultrasonic transducers
Inventor:
Mir Said Seyed-Bolorforosh
Patented Case
View Patent ↗
Granted: Jun 13, 1995
Filed: Jun 15, 1994
Inventor
Mir Said Seyed-Bolorforosh
Assignee (at issue)
Hewlett-Packard Company, L.P.
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.