Granted Patent
Utility
US 6,504,289 · App. 09/954,811
Piezeoelectric transducer having protuberances for transmitting acoustic energy and method of making the same
Inventors:
Minoru Toda, Kyung-Tae Park, Jeffrey Swan
Patented Case
View Patent ↗
Granted: Jan 7, 2003
Filed: Sep 17, 2001
Inventors
Minoru Toda
Kyung-Tae Park
Jeffrey Swan
Assignee (at issue)
MEASUREMENT SPECIALTIES, 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.