SAWAFUJI DYNAMECA CO LTD innovation strategy

Patent filings in countries

#	Industry
#1	Audio-visual technology

#	Technology
#1	Loudspeakers and microphones

Publication	Filing date	Title
JPS6333998A	1986-07-29	Piezoelectric speaker
JPS62290299A	1986-06-10	Coupling mechanism for driving part of piezoelectric vibration element
JPS62290298A	1986-06-10	Magnetic circuit for speaker
JPS62173899A	1986-01-27	Plane drive type speaker
FR2574609A1	1986-01-20	Piezoelectric element for radio loudspeaker - includes piezoelectric plate with main and auxiliary weights attached to visco-elastic layers on opposed faces
FR2574610A1	1986-01-20	Piezoelectric loudspeaker - with two weights joined by viscoelastic layers and connecting rod
JPS62137000A	1985-12-10	Dome type piezoelectric speaker
JPS6294099A	1985-10-21	Piezoelectric vibration construction body
GB8521410D0	1985-08-28	Piezoelectric vibrator
JPS6214600A	1985-07-12	Piezoelectric vibrator
JPS6214599A	1985-07-12	Method for suppressing standing wave vibration of piezoelectric vibrator
JPS61192199A	1985-02-20	Piezoelectric type speaker
JPS61150499A	1984-12-24	Separate type piezoelectric diaphragm
JPS61150500A	1984-12-24	Composite type piezoelectric speaker
JPS6165600A	1984-09-05	Piezo-electric oscillator
JPS5754499A	1980-09-19	Electromagnetic converter
JPS56129496A	1980-03-17	Speaker box