Granted Patent
Utility
US 5,809,053 · App. 08/675,479
Semiconductor laser device and optical printing apparatus using the same
Inventors:
Shin'ichi Nakatsuka, Seiji Maruo, Shinya Kobayashi, Akira Arimoto, Susumu Saito
Patented Case
View Patent ↗
Granted: Sep 15, 1998
Filed: Jul 3, 1996
Inventors
Shin'ichi Nakatsuka
Seiji Maruo
Shinya Kobayashi
Akira Arimoto
Susumu Saito
Assignees (at issue)
HITACHI, LTD.
Hitachi Koki 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.