Granted Patent
Utility
US 4,546,044 · App. 06/485,628
Magnetic recording medium
Inventors:
Masao Asano, Tetsuro Sunaga, Hideki Murata, Kazumasa Matsumoto
Patented Case
View Patent ↗
Granted: Oct 8, 1985
Filed: Apr 18, 1983
Inventors
Masao Asano
Tetsuro Sunaga
Hideki Murata
Kazumasa Matsumoto
Assignee (at issue)
Konishiroku Photo Industry Co., 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.