Granted Patent
Utility
US 5,422,871 · App. 08/121,640
Method and apparatus for producing an optical disk having a read-only area and a rewritable area
Inventors:
Kazuo Nakashima, Kenichi Utsumi, Kazunori Naito
Patented Case
View Patent ↗
Granted: Jun 6, 1995
Filed: Sep 16, 1993
Inventors
Kazuo Nakashima
Kenichi Utsumi
Kazunori Naito
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.