Granted Patent
Utility
US 5,658,707 · App. 08/543,076
Optical recording media
Inventors:
Keisuke Takuma, Tsutami Misawa, Masatoshi Yanagimachi, Hideki Umehara, Yoshiteru Taniguchi, Sumio Hirose
Patented Case
View Patent ↗
Granted: Aug 19, 1997
Filed: Oct 13, 1995
Inventors
Keisuke Takuma
Tsutami Misawa
Masatoshi Yanagimachi
Hideki Umehara
Yoshiteru Taniguchi
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.