Granted Patent
Utility
US 6,677,589 · App. 10/090,825
Object detecting device with a pyroelectric sensor
Inventors:
Atsushi Hironaka, Motoo Ikari, Yuji Takada, Hiroshi Matsuda, Yorinobu Murayama
Patented Case
View Patent ↗
Granted: Jan 13, 2004
Filed: Mar 6, 2002
Inventors
Atsushi Hironaka
Motoo Ikari
Yuji Takada
Hiroshi Matsuda
Yorinobu Murayama
Assignee (at issue)
Matsushita Electric Works, 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.