Granted Patent
Utility
US 6,529,341 · App. 09/530,314
Magnetic recording/reproduction device using preformat information
Inventors:
Tatsuaki Ishida, Taizou Hamada, Kiyokazu Tohma, Hiroshi Ryonai, Keizou Miyata
Patented Case
View Patent ↗
Granted: Mar 4, 2003
Filed: Jul 25, 2000
Inventors
Tatsuaki Ishida
Taizou Hamada
Kiyokazu Tohma
Hiroshi Ryonai
Keizou Miyata
Assignee (at issue)
SUMITOMO ELECTRIC INDUSTRIES, 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.