Granted Patent
Utility
US 5,959,655 · App. 08/653,395
Light beam scanning apparatus which controls power and spot shape of light beam
Inventors:
Seiji Maruo, Shinichi Nakatsuka, Akira Arimoto, Kunio Sato, Shinya Kobayashi, Susumu Saito
Patented Case
View Patent ↗
Granted: Sep 28, 1999
Filed: May 24, 1996
Inventors
Seiji Maruo
Shinichi Nakatsuka
Akira Arimoto
Kunio Sato
Shinya Kobayashi
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.