Granted Patent
Utility
US 5,449,587 · App. 08/192,793
Compact disk-write once type optical recording media
Inventors:
Hisato Itoh, Takahisa Oguchi, Katashi Enomoto, Tsutomu Nishizawa
Patented Case
View Patent ↗
Granted: Sep 12, 1995
Filed: Feb 7, 1994
Inventors
Hisato Itoh
Takahisa Oguchi
Katashi Enomoto
Tsutomu Nishizawa
Assignees (at issue)
Mitsui Toatsu Chemicals, Incorporated
YAMAMOTO CHEMICALS, INC.
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.