Inventor · disambiguated record

Keiichi Katayanagi

Also filed as: KATAYANAGI KEIICHI

2 granted patents·362 citations·filing 1996–1996

72Inventor score

Technology areasG10L

Files withSONY CORP2

Top patents by PatentIndex Score

2 records

0194US5732390ASpeech signal transmitting and receiving apparatus with noise sensitive volume controlSONY CORP·Filed 1996·Granted Mar 24, 1998·302 cites·22 claims
0266US5687285ANoise reducing method, noise reducing apparatus and telephone setSONY CORP·Filed 1996·Granted Nov 11, 1997·60 cites·17 claims

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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →