Granted Patent
Utility
US 5,631,056 · App. 08/413,426
Optical recording medium
Inventors:
Toshinori Kawanishi, Mikiya Kuroda
Patented Case
View Patent ↗
Granted: May 20, 1997
Filed: Mar 30, 1995
Inventors
Toshinori Kawanishi
Mikiya Kuroda
Assignee (at issue)
Victor Company of Japan, Ltd.
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.