Granted Patent
Utility
US 6,031,812 · App. 09/033,869
Optical pickup actuator with magnetic levitation structure
Inventor:
Jiin-Song Liou
Patented Case
View Patent ↗
Granted: Feb 29, 2000
Filed: Mar 3, 1998
Inventor
Jiin-Song Liou
Assignee (at issue)
Industrial Technology Research Institute
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.