Granted Patent
Utility
US 5,573,831 · App. 08/322,527
Optical recording medium
Inventors:
Yuko Suzuki, Shin Aihara, Sumio Hirose
Patented Case
View Patent ↗
Granted: Nov 12, 1996
Filed: Oct 17, 1994
Inventors
Yuko Suzuki
Shin Aihara
Sumio Hirose
Assignee (at issue)
Mitsui Toatsu Chemicals, Incorporated
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.