Inventor
ADACHI TETSUAKI
JP42 patents
⚠️ This page may combine multiple inventors who share the name “ADACHI TETSUAKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
13 patentsUS6172567B1Jan 9, 2001
Radio communication apparatus and radio frequency power amplifier
HITACHI LTD85 citations97
US6636114B2Oct 21, 2003
High frequency power amplifier module and wireless communication apparatus
HITACHI LTD68 citations96
US6605999B2Aug 12, 2003
High-frequency power amplifier, wireless communication apparatus and wireless communication system
HITACHI LTD57 citations96
US6492872B1Dec 10, 2002
High frequency power amplifying module and wireless communication apparatus
HITACHI LTD68 citations96
US6433639B1Aug 13, 2002
High frequency power amplifier module and wireless communication system
HITACHI LTD40 citations96
US5574993ANov 12, 1996
Mobile communication apparatus and method
HITACHI LTD57 citations96
US6330165B1Dec 11, 2001
Semiconductor device
HITACHI LTD74 citations95
US6617927B2Sep 9, 2003
High frequency power amplifier module, and wireless communications system
HITACHI LTD20 citations92
US6489680B2Dec 3, 2002
Semiconductor device
HITACHI LTD15 citations92
US6384686B2May 7, 2002
Radio communication apparatus and radio frequency power amplifier
HITACHI LTD8 citations73
US6288612B1Sep 11, 2001
Radio communication apparatus and radio frequency power amplifier
HITACHI LTD8 citations73
US6658243B2Dec 2, 2003
High frequency power amplifying apparatus having amplifying stages with gain control signals of lower amplitudes applied to earlier preceding stages
HITACHI LTD7 citations71
US6463267B1Oct 8, 2002
High frequency power amplifying apparatus having amplifying stages with gain control signals of lower amplitudes applied to earlier preceding stages
HITACHI LTD13 citations71
RENESAS TECH CORP
12 patentsUS6765268B2Jul 20, 2004
Multiple transistors having a common gate pad between first group of drains and second group of drains
RENESAS TECH CORP51 citations96
US7116173B2Oct 3, 2006
High-frequency power amplifier circuit and electronic part for communication
RENESAS TECH CORP23 citations93
US7123094B2Oct 17, 2006
High frequency power amplifier circuit and radio communication system
RENESAS TECH CORP19 citations92
US6992528B2Jan 31, 2006
Semiconductor device
RENESAS TECH CORP14 citations92
US6900694B2May 31, 2005
High frequency power amplifier module and wireless communication apparatus
RENESAS TECH CORP34 citations92
US7139538B2Nov 21, 2006
Electronic component for amplifying high frequency power and radio communication system
RENESAS TECH CORP25 citations90
US7439622B2Oct 21, 2008
Semiconductor device
RENESAS TECH CORP5 citations74
US7336132B2Feb 26, 2008
High-frequency power amplifier circuit and electronic part for communication
RENESAS TECH CORP6 citations74
US7141876B2Nov 28, 2006
Semiconductor device
RENESAS TECH CORP8 citations74
US7525813B2Apr 28, 2009
Semiconductor device
RENESAS TECH CORP6 citations73
US7227415B2Jun 5, 2007
High frequency power amplifier circuit and radio communication system
RENESAS TECH CORP2 citations63
US6731167B2May 4, 2004
High frequency power amplifier module and wireless communication apparatus
RENESAS TECH CORP3 citations63
MURATA MANUFACTURING CO
9 patentsUS10171036B2Jan 1, 2019
Power amplification circuit
MURATA MANUFACTURING CO6 citations84
US10256848B2Apr 9, 2019
Communication unit
MURATA MANUFACTURING CO2 citations73
US10020786B2Jul 10, 2018
Power amplification module
MURATA MANUFACTURING CO2 citations72
US11264952B2Mar 1, 2022
Power amplification circuit
MURATA MANUFACTURING CO0 citations62
US10965325B2Mar 30, 2021
Communication unit
MURATA MANUFACTURING CO0 citations62
US10944438B2Mar 9, 2021
Communication unit
MURATA MANUFACTURING CO0 citations62
US10819286B2Oct 27, 2020
Power amplification circuit
MURATA MANUFACTURING CO1 citations62
US11398805B2Jul 26, 2022
Power amplification module
MURATA MANUFACTURING CO0 citations61
US10256849B2Apr 9, 2019
Communication unit
MURATA MANUFACTURING CO0 citations52
HITACHI TOBU SEMICONDUCTOR LTD
4 patentsUS7145394B2Dec 5, 2006
High frequency power amplifier module, and wireless communication system
HITACHI TOBU SEMICONDUCTOR LTD12 citations92
US6897728B2May 24, 2005
High frequency power amplifier module and wireless communication system
HITACHI TOBU SEMICONDUCTOR LTD9 citations73
US7068521B2Jun 27, 2006
Semiconductor device
HITACHI TOBU SEMICONDUCTOR LTD1 citations62
US6943441B2Sep 13, 2005
Semiconductor device
HITACHI TOBU SEMICONDUCTOR LTD0 citations51