Granted Patent
Utility
US 6,633,523 · App. 09/542,396
Optical memory apparatus and focus servo control method
Inventors:
Takashi Masaki, Toru Ikeda
Patented Case
View Patent ↗
Granted: Oct 14, 2003
Filed: Apr 4, 2000
Inventors
Takashi Masaki
Toru Ikeda
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.