Granted Patent
Utility
US 5,933,562 · App. 09/029,195
Optical semiconductor component with deep ridged waveguide
Inventors:
Kaspar Dutting, Edgar Kuhn
Patented Case
View Patent ↗
Granted: Aug 3, 1999
Filed: May 19, 1998
Inventors
Kaspar Dutting
Edgar Kuhn
Assignee (at issue)
Alcatel Alsthom Compagnie Generale d'Electricite
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.