Granted Patent
Utility
US 6,404,302 · App. 09/600,233
Surface acoustic wave filter utilizing a transmission line with phase characteristics that increase filter out of band attenuation
Inventors:
Yuki Satoh, Toru Sakuragawa, Kozo Murakami
Patented Case
View Patent ↗
Granted: Jun 11, 2002
Filed: Sep 5, 2000
Inventors
Yuki Satoh
Toru Sakuragawa
Kozo Murakami
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.