Granted Patent
Utility
US 6,329,888 · App. 09/381,424
Reflection inversion surface acoustic wave transducer and filter
Inventor:
Kazuhiro Hirota
Patented Case
View Patent ↗
Granted: Dec 11, 2001
Filed: Sep 20, 1999
Inventor
Kazuhiro Hirota
Assignee (at issue)
Toyo Communication Equipment 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.