Granted Patent
Utility
US 6,611,378 · App. 10/028,031
Thin-film interference filter with quarter-wavelength unit sub-layers arranged in a generalized pattern
Inventors:
Ligang Wang, Turan Erdogan
Patented Case
View Patent ↗
Granted: Aug 26, 2003
Filed: Dec 20, 2001
Inventors
Ligang Wang
Turan Erdogan
Assignee (at issue)
SEMROCK, 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.