Granted Patent
Utility
US 6,652,998 · App. 09/885,313
Producing method of thin film magnetic tape and the thin film magnetic tape
Inventors:
Masaru Segawa, Masahiko Sugiyama
Patented Case
View Patent ↗
Granted: Nov 25, 2003
Filed: Jun 20, 2001
Inventors
Masaru Segawa
Masahiko Sugiyama
Assignee (at issue)
JVC 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.