Granted Patent
Utility
US 5,347,228 · App. 08/094,560
BPSK demodulator using compound phase-locked loop
Inventor:
Jun Iwasaki
Patented Case
View Patent ↗
Granted: Sep 13, 1994
Filed: Jul 20, 1993
Inventor
Jun Iwasaki
Assignee (at issue)
SONY GROUP 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.