Granted Patent
Utility
US 5,369,321 · App. 08/229,063
Optical recording medium
Inventors:
Tadashi Koike, Tadahiko Mizukuki, Tomoyoshi Sasakawa, Yuko Suzuki, Kouichi Shiina
Patented Case
View Patent ↗
Granted: Nov 29, 1994
Filed: Apr 18, 1994
Inventors
Tadashi Koike
Tadahiko Mizukuki
Tomoyoshi Sasakawa
Yuko Suzuki
Kouichi Shiina
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.