Granted Patent
Utility
US 6,805,496 · App. 10/052,739
Optical communication module, manufacturing method thereof and wavelength selective filter
Inventors:
Hiroaki Furuichi, Kazumi Kawamoto, Katsumi Kuroguchi, Keiichi Yamada, Shintarou Sakamoto
Patented Case
View Patent ↗
Granted: Oct 19, 2004
Filed: Jan 17, 2002
Inventors
Hiroaki Furuichi
Kazumi Kawamoto
Katsumi Kuroguchi
Keiichi Yamada
Shintarou Sakamoto
Assignee (at issue)
Opnext Japan, Inc.
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.