Granted Patent
Utility
US 6,560,259 · App. 09/854,800
Spatially coherent surface-emitting, grating coupled quantum cascade laser with unstable resonance cavity
Inventor:
Wen-Yen Hwang
Patented Case
View Patent ↗
Granted: May 6, 2003
Filed: May 14, 2001
Inventor
Wen-Yen Hwang
Assignee (at issue)
Applied Optoelectronics, 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.