Granted Patent
Utility
US 6,504,185 · App. 09/873,208
Compound semiconductor device and method for controlling characteristics of the same
Inventor:
Nobusuke Yamamoto
Patented Case
View Patent ↗
Granted: Jan 7, 2003
Filed: Jun 5, 2001
Inventor
Nobusuke Yamamoto
Assignee (at issue)
OKI ELECTRIC INDUSTRY CO., 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.