Granted Patent
Utility
US 6,278,227 · App. 09/496,926
Piezoelectric transformer
Inventors:
Masafumi KATSUNO, Yoshiaki Fuda
Patented Case
View Patent ↗
Granted: Aug 21, 2001
Filed: Feb 2, 2000
Inventors
Masafumi KATSUNO
Yoshiaki Fuda
Assignee (at issue)
TOKIN CORPORATION
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.