Granted Patent
Utility
US 6,444,486 · App. 09/925,326
Semiconductor laser diode including ridge wave guide and method of manufacturing the same
Inventors:
Joon-seop Kwak, Jae-Hee Cho
Patented Case
View Patent ↗
Granted: Sep 3, 2002
Filed: Aug 10, 2001
Inventors
Joon-seop Kwak
Jae-Hee Cho
Assignee (at issue)
SAMSUNG DISPLAY CO., LTD.
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.