Granted Patent
Utility
US 6,818,979 · App. 10/634,281
High-frequency semiconductor device
Inventors:
Hideki Takehara, Noriyuki Yoshikawa, Kunihiko Kanazawa, Seiichi Nakatani
Patented Case
View Patent ↗
Granted: Nov 16, 2004
Filed: Aug 4, 2003
Inventors
Hideki Takehara
Noriyuki Yoshikawa
Kunihiko Kanazawa
Seiichi Nakatani
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.