Inventor
ICHIKAWA KEIICHI
JP57 patents
⚠️ This page may combine multiple inventors who share the name “ICHIKAWA KEIICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MURATA MANUFACTURING CO
27 patentsUS9853460B2Dec 26, 2017
Power conversion circuit, power transmission system, and power conversion system
MURATA MANUFACTURING CO19 citations84
US10714977B2Jul 14, 2020
Voltage detection circuit, power transmission device, and power transmission system
MURATA MANUFACTURING CO4 citations73
US10014720B2Jul 3, 2018
Power transmission system
MURATA MANUFACTURING CO2 citations73
US9846183B2Dec 19, 2017
Parameter derivation method
MURATA MANUFACTURING CO3 citations73
US9831917B2Nov 28, 2017
Electric field coupling type wireless electric power transmitting system and electric power receiving apparatus included in the same
MURATA MANUFACTURING CO5 citations73
US9698629B2Jul 4, 2017
Wireless power transmission system, power transmitting device, and power receiving device
MURATA MANUFACTURING CO2 citations73
US9685794B2Jun 20, 2017
Power transmission system
MURATA MANUFACTURING CO3 citations73
US9461507B2Oct 4, 2016
Wireless power transmission system
MURATA MANUFACTURING CO4 citations73
US9300135B2Mar 29, 2016
Power transfer system and noncontact charging device
MURATA MANUFACTURING CO3 citations73
US10403431B2Sep 3, 2019
Coil component, coil module, and method for manufacturing coil component
MURATA MANUFACTURING CO3 citations72
US9755460B2Sep 5, 2017
Power reception device, power transmission device and wireless power transmission system
MURATA MANUFACTURING CO4 citations72
US9735589B2Aug 15, 2017
Power transmission device and power transmission control method
MURATA MANUFACTURING CO4 citations70
US10938244B2Mar 2, 2021
Bidirectional wireless power transmission system
MURATA MANUFACTURING CO2 citations67
US11282639B2Mar 22, 2022
Antenna device and electronic apparatus
MURATA MANUFACTURING CO0 citations62
US12476354B2Nov 18, 2025
Antenna element and electronic device
MURATA MANUFACTURING CO0 citations52
US12438261B2Oct 7, 2025
Antenna element, electronic device, and method for manufacturing antenna element
MURATA MANUFACTURING CO0 citations52
US12418095B2Sep 16, 2025
Electronic device including bent portion
MURATA MANUFACTURING CO0 citations52
US12120820B2Oct 15, 2024
Electronic device
MURATA MANUFACTURING CO0 citations52
US10459010B2Oct 29, 2019
Current detection element including a coil-shaped current detection conductor, transmission device, and electric power transmission system
MURATA MANUFACTURING CO0 citations52
US10388450B2Aug 20, 2019
Inductor module and electric power transmission system
MURATA MANUFACTURING CO0 citations52
US10158293B2Dec 18, 2018
Power supply module and mounting structure therefor
MURATA MANUFACTURING CO1 citations52
US10018659B2Jul 10, 2018
Frequency characteristic measurement method
MURATA MANUFACTURING CO0 citations52
US9866038B2Jan 9, 2018
Wireless power transmission system
MURATA MANUFACTURING CO1 citations51
US9973042B2May 15, 2018
Power transmission system
MURATA MANUFACTURING CO0 citations42
US9960638B2May 1, 2018
Wireless power transmission system
MURATA MANUFACTURING CO0 citations42
US9531216B2Dec 27, 2016
Power transmission system and power receiving apparatus
MURATA MANUFACTURING CO0 citations42
US9369009B2Jun 14, 2016
Power transmitting device and power transmission system
MURATA MANUFACTURING CO0 citations42
ICHIKAWA KEIICHI
13 patentsUS8476789B2Jul 2, 2013
Power transmitting apparatus, power receiving apparatus, and power transmission system
ICHIKAWA KEIICHI8 citations84
US9000621B2Apr 7, 2015
Power transmitting device, power receiving device, and power transmission system
ICHIKAWA KEIICHI7 citations83
US8907617B2Dec 9, 2014
Power transfer system and noncontact charging device
ICHIKAWA KEIICHI7 citations83
US8536739B2Sep 17, 2013
Power transfer system and noncontact charging device
ICHIKAWA KEIICHI15 citations83
US8552596B2Oct 8, 2013
Power transmitting apparatus and power transmission system
ICHIKAWA KEIICHI12 citations82
US8987941B2Mar 24, 2015
Power transmission system
ICHIKAWA KEIICHI5 citations73
US9281719B2Mar 8, 2016
High-frequency power device, power transmission device, and power transfer system
ICHIKAWA KEIICHI3 citations72
US9172276B2Oct 27, 2015
Power transmission device and power transfer system
ICHIKAWA KEIICHI5 citations72
US8937409B2Jan 20, 2015
Power transfer system and noncontact charging device
ICHIKAWA KEIICHI5 citations72
US8772978B2Jul 8, 2014
Power transmitting apparatus, power receiving apparatus, and wireless power transmission system
ICHIKAWA KEIICHI5 citations68
US9246553B2Jan 26, 2016
Power reception device and power transmission device
ICHIKAWA KEIICHI2 citations62
US8615402B2Dec 24, 2013
Method and system for distributing disaster information
ICHIKAWA KEIICHI0 citations48
US8160891B2Apr 17, 2012
Method and system for distributing disaster information
ICHIKAWA KEIICHI1 citations48
KIKKOMAN CORP
6 patentsUS11629341B2Apr 18, 2023
Method for producing selenoneine
KIKKOMAN CORP2 citations70
US11028400B2Jun 8, 2021
Method for producing selenoneine
KIKKOMAN CORP2 citations70
US12398411B2Aug 26, 2025
Method for producing selenoneine
KIKKOMAN CORP0 citations62
US11186855B2Nov 30, 2021
Transformed fungus having enhanced ergothioneine productivity and method for producing ergothioneine
KIKKOMAN CORP0 citations62
US10760107B2Sep 1, 2020
Transformed fungus having enhanced ergothioneine productivity and method for producing ergothioneine
KIKKOMAN CORP1 citations62
US9493814B2Nov 15, 2016
Flavin-binding glucose dehydrogenase having improved substrate specificity
KIKKOMAN CORP2 citations49
NGK SPARK PLUG CO
1 patentTAJIMA RYOKO
1 patentSTANLEY ELECTRIC CO LTD
1 patentMIURA HIROKI
1 patentShowing the top 50 of 57 patents by PatentIndex Score.