Granted Patent
Utility
US 6,541,920 · App. 10/042,599
DC/DC converter and self-luminous display apparatus
Inventor:
Hideki Ueda
Patented Case
View Patent ↗
Granted: Apr 1, 2003
Filed: Jan 9, 2002
Inventor
Hideki Ueda
Assignee (at issue)
NEC 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.