Granted Patent
Utility
US 6,288,631 · App. 09/456,495
Power-line carrier communications system
Inventors:
Satoshi Shinozaki, Masahiro Maki, Yuji Igata
Patented Case
View Patent ↗
Granted: Sep 11, 2001
Filed: Dec 8, 1999
Inventors
Satoshi Shinozaki
Masahiro Maki
Yuji Igata
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.