Inventor · disambiguated record
Sumio Hagiwara
Also filed as: HAGIWARA SUMIO
5 granted patents·164 citations·filing 1980–1992
82Inventor score
Files withPIONEER ELECTRONIC CORP5
Top patents by PatentIndex Score
5 records- 0190US5233664ASpeaker system and method of controlling directivity thereofPIONEER ELECTRONIC CORP·Filed 1992·Granted Aug 3, 1993·123 cites·19 claims
- 0259US4404315AMolding compositions and diaphragms, arm pipes and head shells molded therefromPIONEER ELECTRONIC CORP·Filed 1980·Granted Sep 13, 1983·13 cites·5 claims
- 0358US4366205ATone-arm elementsPIONEER ELECTRONIC CORP·Filed 1981·Granted Dec 28, 1982·10 cites·10 claims
- 0455US4343376AVibratory elements for audio equipmentPIONEER ELECTRONIC CORP·Filed 1981·Granted Aug 10, 1982·13 cites·15 claims
- 0535US4362772AVibratory elements for audio equipmentPIONEER ELECTRONIC CORP·Filed 1981·Granted Dec 7, 1982·5 cites·12 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →