Granted Patent
Utility
US 5,753,933 · App. 08/611,674
Optical semiconductor device
Inventor:
Takao Morimoto
Patented Case
View Patent ↗
Granted: May 19, 1998
Filed: Mar 6, 1996
Inventor
Takao Morimoto
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.