Granted Patent
Utility
US 6,738,543 · App. 10/160,383
Hitless tunable wavelength filters
Inventors:
Karl W. Beeson, Lawrence W. Shacklette, Manish Sharma, Han Zou
Patented Case
View Patent ↗
Granted: May 18, 2004
Filed: May 30, 2002
Inventors
Karl W. Beeson
Lawrence W. Shacklette
Manish Sharma
Han Zou
Assignee (at issue)
E.I. DU PONT DE NEMOURS AND COMPANY
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.