Inventor · disambiguated record
Keijiro Maeda
Also filed as: MAEDA KEIJIRO · SHIMIZU AKIO
5 granted patents·112 citations·filing 1975–1993
82Inventor score
Files withSONY CORP5
Top patents by PatentIndex Score
5 records- 0178US4322583AVoice coil bobbin connection to loudspeaker diaphragm of honeycomb core sandwiched by sheetsSONY CORP·Filed 1979·Granted Mar 30, 1982·43 cites·3 claims
- 0270US4054291ATurntable assembly for phonograph recordsSONY CORP·Filed 1975·Granted Oct 18, 1977·15 cites·9 claims
- 0362US4176249ADeleterious mechanical vibrations from dynamic loudspeaker offset by additional dynamic deviceSONY CORP·Filed 1978·Granted Nov 27, 1979·23 cites·11 claims
- 0454US5471540AElectrostatic loudspeaker having stationary electrodes formed as multiple sheets insulated from each otherSONY CORP·Filed 1993·Granted Nov 28, 1995·28 cites·11 claims
- 0537US4029322APickup arm assemblySONY CORP·Filed 1976·Granted Jun 14, 1977·3 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →