Inventor
KOHAMA KAZUMASA
JP17 patents
⚠️ This page may combine multiple inventors who share the name “KOHAMA KAZUMASA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SONY CORP
13 patentsUS5969560AOct 19, 1999
Switching circuit at high frequency with low insertion loss
SONY CORP130 citations98
US6563366B1May 13, 2003
High-frequency Circuit
SONY CORP124 citations97
US5917362AJun 29, 1999
Switching circuit
SONY CORP93 citations97
US5825227AOct 20, 1998
Switching circuit at high frequency with low insertion loss
SONY CORP96 citations97
US5812939ASep 22, 1998
Switch semiconductor integrated circuit and communication terminal device
SONY CORP99 citations97
US5731607AMar 24, 1998
Semiconductor integrated circuit device
SONY CORP99 citations97
US5548239AAug 20, 1996
Radio receiver-transmitter apparatus and signal changeover switch
SONY CORP138 citations97
US6704550B1Mar 9, 2004
Antenna switching circuit and communication system using the same
SONY CORP63 citations96
US5717356AFeb 10, 1998
Low insertion loss switch
SONY CORP92 citations96
US5448207ASep 5, 1995
Attenuator circuit apparatus
SONY CORP79 citations96
US9824986B2Nov 21, 2017
High-frequency device including high-frequency switching circuit
SONY CORP0 citations52
US9406696B2Aug 2, 2016
High-frequency device including high-frequency switching circuit
SONY CORP0 citations52
US9105564B2Aug 11, 2015
High-frequency device including high-frequency switching circuit
SONY CORP0 citations52
SONY SEMICONDUCTOR SOLUTIONS CORP
2 patentsUS10276911B2Apr 30, 2019
Signal processing circuit, signal processing module, and communication apparatus
SONY SEMICONDUCTOR SOLUTIONS CORP4 citations73
US10784557B2Sep 22, 2020
Signal processing circuit, signal processing module, and communication apparatus
SONY SEMICONDUCTOR SOLUTIONS CORP0 citations52