Granted Patent
Utility
US 6,438,150 · App. 09/264,997
Edge-emitting semiconductor laser having asymmetric interference filters
Inventor:
Sung-Joo Ben Yoo
Patented Case
View Patent ↗
Granted: Aug 20, 2002
Filed: Mar 9, 1999
Inventor
Sung-Joo Ben Yoo
Assignee (at issue)
TELECORDIA TECHNOLOGIES, 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.