Inventor
OKUBO YOICHI
JP34 patents
⚠️ This page may combine multiple inventors who share the name “OKUBO YOICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI INT ELECTRIC INC
22 patentsUS7427895B1Sep 23, 2008
Doherty amplifier with improved linearity
HITACHI INT ELECTRIC INC78 citations98
US8030995B2Oct 4, 2011
Power circuit used for an amplifier
HITACHI INT ELECTRIC INC21 citations92
US8014443B2Sep 6, 2011
Non-linear distortion detection method and distortion compensation amplifying device
HITACHI INT ELECTRIC INC20 citations92
US7847630B2Dec 7, 2010
Amplifier
HITACHI INT ELECTRIC INC23 citations92
US7142615B2Nov 28, 2006
Distortion compensator
HITACHI INT ELECTRIC INC37 citations92
US6931239B2Aug 16, 2005
Peak limiter and multi-carrier amplification apparatus
HITACHI INT ELECTRIC INC28 citations92
US6714073B2Mar 30, 2004
Predistortion type distortion compensation amplification apparatus
HITACHI INT ELECTRIC INC28 citations92
US6904267B2Jun 7, 2005
Amplifying device
HITACHI INT ELECTRIC INC14 citations84
US7626455B2Dec 1, 2009
Distortion compensation apparatus
HITACHI INT ELECTRIC INC13 citations83
US6741128B2May 25, 2004
Distortion canceling circuit
HITACHI INT ELECTRIC INC15 citations83
US8035444B2Oct 11, 2011
Amplifier apparatus
HITACHI INT ELECTRIC INC17 citations82
US7714648B2May 11, 2010
Amplifying system
HITACHI INT ELECTRIC INC7 citations74
US6856196B2Feb 15, 2005
Distortion compensator
HITACHI INT ELECTRIC INC7 citations73
US6753728B2Jun 22, 2004
Distortion reducing circuit
HITACHI INT ELECTRIC INC10 citations73
US6698224B2Mar 2, 2004
Electronic apparatus having at least two electronic parts operating at different temperatures
HITACHI INT ELECTRIC INC11 citations72
US7719353B2May 18, 2010
LINC amplifying device
HITACHI INT ELECTRIC INC2 citations63
US7583239B2Sep 1, 2009
Wireless communications device
HITACHI INT ELECTRIC INC2 citations62
US6809588B2Oct 26, 2004
Distortion compensation circuit
HITACHI INT ELECTRIC INC2 citations62
US7149497B2Dec 12, 2006
Radio signal receiving device
HITACHI INT ELECTRIC INC4 citations61
US7719364B2May 18, 2010
High frequency power amplifier
HITACHI INT ELECTRIC INC3 citations59
US6968210B2Nov 22, 2005
Receiving apparatus
HITACHI INT ELECTRIC INC0 citations50
US6959174B2Oct 25, 2005
Amplifying device
HITACHI INT ELECTRIC INC0 citations42
MITSUBISHI ELECTRIC CORP
4 patentsUS10457269B2Oct 29, 2019
Vehicle energy management device
MITSUBISHI ELECTRIC CORP4 citations72
US9184792B2Nov 10, 2015
Charging communication system and charging equipment
MITSUBISHI ELECTRIC CORP3 citations61
US9139163B2Sep 22, 2015
Electric-powered vehicle
MITSUBISHI ELECTRIC CORP0 citations42
US9932021B2Apr 3, 2018
Vehicle collision prevention apparatus
MITSUBISHI ELECTRIC CORP0 citations40
KOKUSAI ELECTRIC CO LTD
2 patentsUBE INDUSTRIES
2 patentsUS7846546B2Dec 7, 2010
Electrically conducting-inorganic substance-containing silicon carbide-based fine particles, electromagnetic wave absorbing material and electromagnetic wave absorber
UBE INDUSTRIES3 citations61
US6773634B2Aug 10, 2004
Conductive polymer composition and PTC element
UBE INDUSTRIES0 citations43