Granted Patent
Utility
US 6,139,936 · App. 08/947,647
Discrete track media produced by underlayer laser ablation
Inventor:
Joel R. Weiss
Patented Case
View Patent ↗
Granted: Oct 31, 2000
Filed: Oct 9, 1997
Inventor
Joel R. Weiss
Assignee (at issue)
Akashic Memories Corp.
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.