Inventor · disambiguated record
Kazumasa Kohama
Also filed as: KOHAMA KAZUMASA
17 granted patents·1,017 citations·filing 1994–2019
95Inventor score
Top patents by PatentIndex Score
17 records- 0196US5969560ASwitching circuit at high frequency with low insertion lossSONY CORP·Filed 1997·Granted Oct 19, 1999·130 cites·18 claims
- 0295US6563366B1High-frequency CircuitSONY CORP·Filed 1998·Granted May 13, 2003·124 cites·17 claims
- 0393US5731607ASemiconductor integrated circuit deviceSONY CORP·Filed 1996·Granted Mar 24, 1998·99 cites·14 claims
- 0493US5717356ALow insertion loss switchSONY CORP·Filed 1996·Granted Feb 10, 1998·92 cites·12 claims
- 0593US5448207AAttenuator circuit apparatusSONY CORP·Filed 1994·Granted Sep 5, 1995·79 cites·4 claims
- 0692US6704550B1Antenna switching circuit and communication system using the sameSONY CORP·Filed 2000·Granted Mar 9, 2004·63 cites·16 claims
- 0792US5917362ASwitching circuitSONY CORP·Filed 1998·Granted Jun 29, 1999·93 cites·11 claims
- 0892US5548239ARadio receiver-transmitter apparatus and signal changeover switchSONY CORP·Filed 1994·Granted Aug 20, 1996·138 cites·3 claims
- 0988US5825227ASwitching circuit at high frequency with low insertion lossSONY CORP·Filed 1996·Granted Oct 20, 1998·96 cites·6 claims
- 1087US10276911B2Signal processing circuit, signal processing module, and communication apparatusSONY SEMICONDUCTOR SOLUTIONS CORP·Filed 2016·Granted Apr 30, 2019·4 cites·13 claims
- 1186US5812939ASwitch semiconductor integrated circuit and communication terminal deviceSONY CORP·Filed 1996·Granted Sep 22, 1998·99 cites·8 claims
- 1259US10784557B2Signal processing circuit, signal processing module, and communication apparatusSONY SEMICONDUCTOR SOLUTIONS CORP·Filed 2019·Granted Sep 22, 2020·0 cites·15 claims
- 1356US9105564B2High-frequency device including high-frequency switching circuitSONY CORP·Filed 2013·Granted Aug 11, 2015·0 cites·12 claims
- 1455US9824986B2High-frequency device including high-frequency switching circuitSONY CORP·Filed 2016·Granted Nov 21, 2017·0 cites·8 claims
- 1554US9406696B2High-frequency device including high-frequency switching circuitSONY CORP·Filed 2015·Granted Aug 2, 2016·0 cites·8 claims
- 1646US8598629B2High-frequency device including high-frequency switching circuitKOHAMA KAZUMASA·Filed 2006·Granted Dec 3, 2013·0 cites·18 claims
- 1734US8797697B2High frequency integrated circuitKOHAMA KAZUMASA·Filed 2005·Granted Aug 5, 2014·0 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →