Granted Patent
Utility
US 5,781,670 · App. 08/644,769
Optical frequency channel selection filter with electronically-controlled grating structures
Inventors:
David A. G. Deacon, Michael J. Brinkman, William K. Bischel, Simon J. Field
Patented Case
View Patent ↗
Granted: Jul 14, 1998
Filed: May 10, 1996
Inventors
David A. G. Deacon
Michael J. Brinkman
William K. Bischel
Simon J. Field
Assignee (at issue)
GEMFIRE 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.