Granted Patent
Utility
US 6,765,449 · App. 10/368,695
Pulse width modulation circuit
Inventors:
Kazutaka Murayama, Sadatoshi Hisamoto, Norio Umezu, Yoshitaka Handa, Shuichi Hiza
Patented Case
View Patent ↗
Granted: Jul 20, 2004
Filed: Feb 19, 2003
Inventors
Kazutaka Murayama
Sadatoshi Hisamoto
Norio Umezu
Yoshitaka Handa
Shuichi Hiza
Assignee (at issue)
ONKYO 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.