Granted Patent
Utility
US 6,400,743 · App. 09/634,703
High-power semiconductor laser device having current confinement structure and index-guided structure
Inventors:
Toshiaki Fukunaga, Mitsugu Wada
Patented Case
View Patent ↗
Granted: Jun 4, 2002
Filed: Aug 7, 2000
Inventors
Toshiaki Fukunaga
Mitsugu Wada
Assignee (at issue)
Fujitsu Limited
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.