Granted Patent
Utility
US 5,543,957 · App. 08/358,622
Optical modulator and method of producing the same
Inventors:
Tomoaki Koui, Shinji Takano
Patented Case
View Patent ↗
Granted: Aug 6, 1996
Filed: Dec 14, 1994
Inventors
Tomoaki Koui
Shinji Takano
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.