Granted Patent
Utility
US 5,677,971 · App. 08/517,614
Optical wavelength filter with reduced sidelobes and simple design
Inventors:
Hideaki Okayama, Masao Kobayashi
Patented Case
View Patent ↗
Granted: Oct 14, 1997
Filed: Aug 22, 1995
Inventors
Hideaki Okayama
Masao Kobayashi
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.