Granted Patent
Utility
US 6,374,018 · App. 09/531,964
Optical switch, method of operating optical switch, and method of designing optical switch
Inventor:
Hideaki Okayama
Patented Case
View Patent ↗
Granted: Apr 16, 2002
Filed: Mar 21, 2000
Inventor
Hideaki Okayama
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.