Granted Patent
Utility
US 5,764,668 · App. 08/363,834
Semiconductor laser device
Inventors:
Shoji Ishizaka, Kiyofumi Muro, Tsuyoshi Fujimoto, Yoshikazu Yamada
Patented Case
View Patent ↗
Granted: Jun 9, 1998
Filed: Dec 27, 1994
Inventors
Shoji Ishizaka
Kiyofumi Muro
Tsuyoshi Fujimoto
Yoshikazu Yamada
Assignee (at issue)
Mitsui Petrochemical Industries, 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.