Granted Patent
Utility
US 5,840,410 · App. 08/597,826
Magnetic recording medium having a magnetic layer and a partially-filled liquid lubricant-containing coating thereunder
Inventors:
Shigeto Oiri, Yoji Tsukamoto, Hideaki Yasui
Patented Case
View Patent ↗
Granted: Nov 24, 1998
Filed: Feb 7, 1996
Inventors
Shigeto Oiri
Yoji Tsukamoto
Hideaki Yasui
Assignee (at issue)
Imation 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.