Granted Patent
Utility
US 5,276,515 · App. 07/942,143
Compatible wide aspect ratio receiver with spatial filtering for variable zoom
Inventors:
Kenji Katsumata, Shigeru Hirahata, Haruki Takata, Mituo Konno, Kouichi Ishibashi, Kazuhiro Kaizaki, Takaaki Matono, Atushi Haratani
Patented Case
View Patent ↗
Granted: Jan 4, 1994
Filed: Sep 8, 1992
Inventors
Kenji Katsumata
Shigeru Hirahata
Haruki Takata
Mituo Konno
Kouichi Ishibashi
Kazuhiro Kaizaki
Takaaki Matono
Atushi Haratani
Assignees (at issue)
HITACHI, LTD.
Hitachi Video and Information Systems, Inc.
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.