Inventor · disambiguated record
Keiji Yamahai
Also filed as: YAMAHAI KEIJI
4 granted patents·3 pending applications·1 citations·filing 2002–2017
59Inventor score
Files withKAWASAKI YUJI2PANASONIC IP MAN CO LTD2KITAGO RYOSUKE1MATSUSHITA ELECTRIC INDUSTRIAL CO LTD1NAKAZAWA YUKIHIRO1
Top patents by PatentIndex Score
7 records- 0153US9953499B2Alarm notifying systemPANASONIC IP MAN CO LTD·Filed 2017·Granted Apr 24, 2018·0 cites·19 claims
- 0249US9652961B2Alarm notifying systemPANASONIC IP MAN CO LTD·Filed 2015·Granted May 16, 2017·0 cites·12 claims
- 0349US9031258B2Acoustic feedback suppression apparatus, microphone apparatus, amplifier apparatus, sound amplification system, and acoustic feedback suppression methodKITAGO RYOSUKE·Filed 2010·Granted May 12, 2015·1 cites·12 claims
- 0446US9508240B2Sound receiving apparatus, sound receiving method, sound receiving system, and wireless microphoneKAWASAKI YUJI·Filed 2010·Granted Nov 29, 2016·0 cites·20 claims
- 0544US2002168029A1Digital signal receiving apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2002·Application pending·0 cites
- 0634US2012257762A1Communication system, receiving apparatus and communication methodKAWASAKI YUJI·Filed 2011·Application pending·0 cites
- 0720US2012002975A1Wireless microphoneNAKAZAWA YUKIHIRO·Filed 2010·Application pending·0 cites
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →