Inventor
TAKAHASHI FUMIKAZU
JP33 patents
⚠️ This page may combine multiple inventors who share the name “TAKAHASHI FUMIKAZU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI COMP PERIPHERALS CO
9 patentsUS7840840B2Nov 23, 2010
DC backup power supply system, a disk array and a DC backup power supply
HITACHI COMP PERIPHERALS CO25 citations92
US7589436B2Sep 15, 2009
Data processing unit and DC backup power supply
HITACHI COMP PERIPHERALS CO30 citations92
US7049711B2May 23, 2006
Uninterruptible power system
HITACHI COMP PERIPHERALS CO24 citations92
US7245469B2Jul 17, 2007
DC backup power supply device and method for diagnosing the same
HITACHI COMP PERIPHERALS CO27 citations91
US7406623B2Jul 29, 2008
DC backup power supply system and disk array using same
HITACHI COMP PERIPHERALS CO27 citations90
US7923980B2Apr 12, 2011
Digital controlled power supply
HITACHI COMP PERIPHERALS CO15 citations84
US7880440B2Feb 1, 2011
Switching power supply
HITACHI COMP PERIPHERALS CO8 citations84
US7705562B2Apr 27, 2010
Switching power supply unit and disk array system
HITACHI COMP PERIPHERALS CO15 citations83
US7683597B2Mar 23, 2010
PWM signal generating circuit and power supply apparatus comprising such PWM signal generating circuit
HITACHI COMP PERIPHERALS CO6 citations62
KAO CORP
6 patentsUS11312980B2Apr 26, 2022
Method for producing 3-hydroxy-4-aminobenzoic acid compound
KAO CORP1 citations55
US9540672B2Jan 10, 2017
Method of producing glycolipids
KAO CORP0 citations52
US10590428B2Mar 17, 2020
Sophorolipid highly-productive mutant strain
KAO CORP0 citations50
US10351862B2Jul 16, 2019
Promoter
KAO CORP0 citations46
US10590442B2Mar 17, 2020
Method for producing C4 dicarboxylic acid
KAO CORP0 citations44
US10435684B2Oct 8, 2019
Sophorolipid highly-productive mutant strain
KAO CORP0 citations36
HITACHI INFORMATION & TELECOMMUNICATION ENG LTD
4 patentsUS9680303B2Jun 13, 2017
Power storage system and power source system
HITACHI INFORMATION & TELECOMMUNICATION ENG LTD4 citations70
US9991819B2Jun 5, 2018
Power conversion system and method for detecting isolated operation of the same
HITACHI INFORMATION & TELECOMMUNICATION ENG LTD2 citations68
US10063058B2Aug 28, 2018
Power converter
HITACHI INFORMATION & TELECOMMUNICATION ENG LTD1 citations51
US9515557B2Dec 6, 2016
Step-up step-down converter device
HITACHI INFORMATION & TELECOMMUNICATION ENG LTD0 citations40
HITACHI LTD
3 patentsTOSHIBA KK
3 patentsTAKAHASHI FUMIKAZU
2 patentsHITACHI INFO & TELECOMM ENG
2 patentsUS9306472B2Apr 5, 2016
Power supply device operating switching elements of first and second switching legs to charge first and second capacitors to a voltage higher than a voltage crest value of an AC power supply and method of operating the power supply device
HITACHI INFO & TELECOMM ENG3 citations70
US9225181B2Dec 29, 2015
Power storage system with constant current charge control or constant voltage charge control depending on battery terminal voltage in a charging process
HITACHI INFO & TELECOMM ENG1 citations47