Granted Patent
Utility
US 6,639,933 · App. 09/993,764
Phase-locked loop circuit and radio communication apparatus using the same
Inventors:
Taizo Yamawaki, Masaru Kokubo, Tomio Furuya, Kazuo Watanabe, Julian Hildersley
Patented Case
View Patent ↗
Granted: Oct 28, 2003
Filed: Nov 27, 2001
Inventors
Taizo Yamawaki
Masaru Kokubo
Tomio Furuya
Kazuo Watanabe
Julian Hildersley
Assignees (at issue)
HITACHI, LTD.
The Technology Partnership PLC
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.