Granted Patent
Utility
US 6,535,331 · App. 09/761,991
Wideband optical amplifier and wideband variable wavelength optical source
Inventors:
Kazunori Shiota, Eiji Kanoh
Patented Case
View Patent ↗
Granted: Mar 18, 2003
Filed: Jan 16, 2001
Inventors
Kazunori Shiota
Eiji Kanoh
Assignee (at issue)
Advantest 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.