Granted Patent
Utility
US 5,271,978 · App. 07/829,798
Optical recording media
Inventors:
Fridrich Vazan, Yuan-Sheng Tyan, Kee-Chuan Pan
Patented Case
View Patent ↗
Granted: Dec 21, 1993
Filed: Jan 31, 1992
Inventors
Fridrich Vazan
Yuan-Sheng Tyan
Kee-Chuan Pan
Assignee (at issue)
EASTMAN KODAK COMPANY
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.