Granted Patent
Utility
US 5,974,205 · App. 08/979,288
Compact two-by-n optical components based on birefringent walk-off crystals
Inventor:
Kok-Wai Chang
Patented Case
View Patent ↗
Granted: Oct 26, 1999
Filed: Nov 26, 1997
Inventor
Kok-Wai Chang
Assignee (at issue)
Hewlett-Packard Company, L.P.
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.