Granted Patent
Utility
US 6,411,765 · App. 09/533,737
Optical waveguide element and method for manufacturing optical waveguide element
Inventor:
Hideki Ono
Patented Case
View Patent ↗
Granted: Jun 25, 2002
Filed: Mar 23, 2000
Inventor
Hideki Ono
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.