Granted Patent
Utility
US 6,750,592 · App. 09/985,898
Surface acoustic wave filter and surface acoustic wave filter apparatus
Inventors:
Yoshihiro Takahashi, Tadaaki Tsuda, Yasushi Yamamoto, Hiroshi Kawahara
Patented Case
View Patent ↗
Granted: Jun 15, 2004
Filed: Nov 6, 2001
Inventors
Yoshihiro Takahashi
Tadaaki Tsuda
Yasushi Yamamoto
Hiroshi Kawahara
Assignee (at issue)
NRS Technologies, Inc.
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.