Assignee
SAWAFUJI TADASHI
JP·4 granted patents·190 citations·filing 1979–1984
Technology mixH04R4
Top patents by PatentIndex Score
4 records- 0179US4597099APiezoelectric transducerSAWAFUJI TADASHI·Filed 1984·Granted Jun 24, 1986·59 cites·9 claims
- 0278US4544805APlane speakerSAWAFUJI TADASHI·Filed 1982·Granted Oct 1, 1985·55 cites·1 claims
- 0378US4228327AElectromagnetic type acoustic transducersSAWAFUJI TADASHI·Filed 1979·Granted Oct 14, 1980·42 cites·5 claims
- 0470US4276449ASpeaker or microphone having corrugated diaphragm with conductors thereonSAWAFUJI TADASHI·Filed 1979·Granted Jun 30, 1981·34 cites·14 claims
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