Granted Patent
Utility
US 6,822,152 · App. 09/359,793
Audio signal processing apparatus
Inventors:
Youichi Yamada, Takeaki Funada, Hiroyuki Isobe, Keitaro Kaburagi, Naomi Amemiya, Gen Inoshita, Ko Atsumi
Patented Case
View Patent ↗
Granted: Nov 23, 2004
Filed: Jul 26, 1999
Inventors
Youichi Yamada
Takeaki Funada
Hiroyuki Isobe
Keitaro Kaburagi
Naomi Amemiya
Gen Inoshita
Ko Atsumi
Assignee (at issue)
Pioneer Electronic Corporation
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.