Inventor
IWATA TATSUO
JP3 patents
Patents
3 patentsUS5392012AFeb 21, 1995
Piezoelectric filter in a casing sealed by an insulating filler and having cranked connecting legs
NGK SPARK PLUG CO18 citations71
US5939957AAug 17, 1999
6-elements ladder type piezoelectric filter
NGK SPARK PLUG CO10 citations67
US6590474B2Jul 8, 2003
Multilayer piezoelectric filter with an air vent between two resonator chambers
NGK SPARK PLUG CO0 citations39