Granted Patent
Utility
US 6,359,720 · App. 09/450,117
Optical processor using electro-absorption type optical modulators
Inventor:
Koji Yamada
Patented Case
View Patent ↗
Granted: Mar 19, 2002
Filed: Nov 26, 1999
Inventor
Koji Yamada
Assignee (at issue)
OKI ELECTRIC INDUSTRY CO., LTD.
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.