Kenichi Ishizuka

Person

Nagaokakyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Antenna device and electronic equipment
- Patent number 12,218,438
- Issue date Feb 4, 2025
- Murata Manufacturing Co., Ltd.
- Kentaro Mikawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Multi-terminal chip inductor
- Patent number 12,154,714
- Issue date Nov 26, 2024
- Murata Manufacturing Co., Ltd.
- Satoshi Shigematsu
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Circuit element
- Patent number 12,106,880
- Issue date Oct 1, 2024
- Murata Manufacturing Co., Ltd.
- Satoshi Shigematsu
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Antenna device and electronic apparatus
- Patent number 11,901,611
- Issue date Feb 13, 2024
- Murata Manufacturing Co., Ltd.
- Takafumi Nasu
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Filter circuit module, filter circuit element, filter circuit, and...
- Patent number 11,838,043
- Issue date Dec 5, 2023
- Murata Manufacturing Co., Ltd.
- Satoshi Shigematsu
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
LC composite component and communication terminal device
- Patent number 11,831,292
- Issue date Nov 28, 2023
- Murata Manufacturing Co., Ltd.
- Hideaki Kobayashi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Filter element
- Patent number 11,811,381
- Issue date Nov 7, 2023
- Murata Manufacturing Co., Ltd.
- Satoshi Shigematsu
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Matching circuit, matching circuit element, and communication device
- Patent number 11,777,466
- Issue date Oct 3, 2023
- Murata Manufacturing Co., Ltd.
- Hisashi Akiyama
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Antenna coupling element, antenna device, and electronic device
- Patent number 11,646,495
- Issue date May 9, 2023
- Murata Manufacturing Co., Ltd.
- Kenichi Ishizuka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Antenna apparatus
- Patent number 11,387,542
- Issue date Jul 12, 2022
- Murata Manufacturing Co., Ltd.
- Hideaki Kobayashi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Inductance element, high-frequency transformer element, impedance c...
- Patent number 11,289,258
- Issue date Mar 29, 2022
- Murata Manufacturing Co., Ltd.
- Akira Ochiai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Antenna coupling element, antenna device, and electronic device
- Patent number 11,271,314
- Issue date Mar 8, 2022
- Murata Manufacturing Co., Ltd.
- Kenichi Ishizuka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Filter circuit, filter circuit element, and multi/demultiplexer
- Patent number 11,228,295
- Issue date Jan 18, 2022
- Murata Manufacturing Co., Ltd.
- Kenichi Ishizuka
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Antenna device and electronic equipment
- Patent number 11,128,046
- Issue date Sep 21, 2021
- Murata Manufacturing Co., Ltd.
- Kentaro Mikawa
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Surface-mounted LC device
- Patent number 10,950,381
- Issue date Mar 16, 2021
- Murata Manufacturing Co., Ltd.
- Kenichi Ishizuka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Magnetic field coupling element, antenna device, and electronic equ...
- Patent number 10,903,571
- Issue date Jan 26, 2021
- Murata Manufacturing Co., Ltd.
- Kentaro Mikawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Trap filter and filter circuit
- Patent number 10,903,812
- Issue date Jan 26, 2021
- Murata Manufacturing Co., Ltd.
- Hideaki Kobayashi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Electronic device
- Patent number 10,886,601
- Issue date Jan 5, 2021
- Murata Manufacturing Co., Ltd.
- Kenichi Ishizuka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Coil device
- Patent number 10,840,873
- Issue date Nov 17, 2020
- Murata Manufacturing Co., Ltd.
- Kenichi Ishizuka
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Phase shifter module, multiplexer/demultiplexer, and communication...
- Patent number 10,734,970
- Issue date Aug 4, 2020
- Murata Manufacturing Co., Ltd.
- Kenichi Ishizuka
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Resonant circuit, band elimination filter, and band pass filter
- Patent number 10,530,322
- Issue date Jan 7, 2020
- Murata Manufacturing Co., Ltd.
- Hiroshi Nishida
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Transformer-type phase shifter, phase-shift circuit, and communicat...
- Patent number 10,348,265
- Issue date Jul 9, 2019
- Murata Manufacturing Co., Ltd.
- Kenichi Ishizuka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Impedance conversion circuit, antenna apparatus, and wireless commu...
- Patent number 10,348,266
- Issue date Jul 9, 2019
- Murata Manufacturing Co., Ltd.
- Yuichiro Teshima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Antenna matching circuit, antenna device, and communication termina...
- Patent number 10,340,877
- Issue date Jul 2, 2019
- Murata Manufacturing Co., Ltd.
- Kenichi Ishizuka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Mobile wireless terminal
- Patent number 10,327,317
- Issue date Jun 18, 2019
- Murata Manufacturing Co., Ltd.
- Tsuyoshi Tokunaga
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Antenna matching circuit, antenna matching module, antenna device a...
- Patent number 10,305,184
- Issue date May 28, 2019
- Murata Manufacturing Co., Ltd.
- Kenichi Ishizuka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Phase shifter, impedance matching circuit, and communication termin...
- Patent number 10,277,192
- Issue date Apr 30, 2019
- Murata Manufacturing Co., Ltd.
- Kenichi Ishizuka
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Impedance conversion element and communication device
- Patent number 10,263,324
- Issue date Apr 16, 2019
- Murata Manufacturing Co., Ltd.
- Hisashi Akiyama
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Antenna circuit and communication device
- Patent number 10,181,644
- Issue date Jan 15, 2019
- Murata Manufacturing Co., Ltd.
- Hiroshi Nishida
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Phase shifter, impedance matching circuit, multi/demultiplexer, and...
- Patent number 10,079,587
- Issue date Sep 18, 2018
- Murata Manufacturing Co., Ltd.
- Kenichi Ishizuka
- H03 - BASIC ELECTRONIC CIRCUITRY

Patents Applicationslast 30 patents

Information Patent Application
ELECTRONIC COMPONENT
- Publication number 20240331922
- Publication date Oct 3, 2024
- Murata Manufacturing Co., Ltd.
- Satoshi SHIGEMATSU
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
COIL COMPONENT
- Publication number 20240046063
- Publication date Feb 8, 2024
- Murata Manufacturing Co., Ltd.
- Satoshi SHIGEMATSU
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
POWER SPLITTER AND COMMUNICATION APPARATUS
- Publication number 20230369735
- Publication date Nov 16, 2023
- Murata Manufacturing Co., Ltd.
- Satoshi SHIGEMATSU
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
FILTER, FILTER MODULE, AND ELECTRONIC DEVICE
- Publication number 20230216466
- Publication date Jul 6, 2023
- Murata Manufacturing Co., Ltd.
- Kenichi ISHIZUKA
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
FILTER MODULE, FILTER ELEMENT, AND ELECTRONIC DEVICE
- Publication number 20230199942
- Publication date Jun 22, 2023
- Murata Manufacturing Co., Ltd.
- Kentaro MIKAWA
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Application
ANTENNA DEVICE AND ELECTRONIC APPARATUS
- Publication number 20230098392
- Publication date Mar 30, 2023
- Murata Manufacturing Co., Ltd.
- Takafumi NASU
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
ANTENNA COUPLING ELEMENT, ANTENNA DEVICE, AND ELECTRONIC DEVICE
- Publication number 20220247081
- Publication date Aug 4, 2022
- Murata Manufacturing Co., Ltd.
- Kenichi ISHIZUKA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
MULTI-TERMINAL CHIP INDUCTOR
- Publication number 20220059278
- Publication date Feb 24, 2022
- Murata Manufacturing Co., Ltd.
- Satoshi SHIGEMATSU
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
CIRCUIT ELEMENT
- Publication number 20210407721
- Publication date Dec 30, 2021
- Murata Manufacturing Co., Ltd.
- Satoshi SHIGEMATSU
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
ANTENNA DEVICE AND ELECTRONIC EQUIPMENT
- Publication number 20210376468
- Publication date Dec 2, 2021
- Murata Manufacturing Co., Ltd.
- Kentaro MIKAWA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
LC COMPOSITE COMPONENT AND COMMUNICATION TERMINAL DEVICE
- Publication number 20210351757
- Publication date Nov 11, 2021
- Murata Manufacturing Co., Ltd.
- Hideaki KOBAYASHI
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
FILTER CIRCUIT MODULE, FILTER CIRCUIT ELEMENT, FILTER CIRCUIT, AND...
- Publication number 20210336648
- Publication date Oct 28, 2021
- Murata Manufacturing Co., Ltd.
- Satoshi SHIGEMATSU
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
ANTENNA DEVICE AND ELECTRONIC APPARATUS
- Publication number 20210320397
- Publication date Oct 14, 2021
- Murata Manufacturing Co., Ltd.
- Takafumi NASU
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
FILTER ELEMENT
- Publication number 20210320638
- Publication date Oct 14, 2021
- Murata Manufacturing Co., Ltd.
- Satoshi SHIGEMATSU
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
MATCHING CIRCUIT, MATCHING CIRCUIT ELEMENT, AND COMMUNICATION DEVICE
- Publication number 20210297052
- Publication date Sep 23, 2021
- Murata Manufacturing Co., Ltd.
- Hisashi AKIYAMA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
ANTENNA APPARATUS
- Publication number 20200328496
- Publication date Oct 15, 2020
- Murata Manufacturing Co., Ltd.
- Hideaki KOBAYASHI
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
FILTER CIRCUIT, FILTER CIRCUIT ELEMENT, AND MULTI/DEMULTIPLEXER
- Publication number 20200252041
- Publication date Aug 6, 2020
- Murata Manufacturing Co., Ltd.
- Kenichi ISHIZUKA
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
ANTENNA COUPLING ELEMENT, ANTENNA DEVICE, AND ELECTRONIC DEVICE
- Publication number 20200153099
- Publication date May 14, 2020
- Murata Manufacturing Co., Ltd.
- Kenichi ISHIZUKA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
TRAP FILTER AND FILTER CIRCUIT
- Publication number 20190372544
- Publication date Dec 5, 2019
- Murata Manufacturing Co., Ltd.
- Hideaki KOBAYASHI
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
ANTENNA DEVICE AND ELECTRONIC EQUIPMENT
- Publication number 20190214727
- Publication date Jul 11, 2019
- Murata Manufacturing Co., Ltd.
- Kentaro MIKAWA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
MAGNETIC FIELD COUPLING ELEMENT, ANTENNA DEVICE, AND ELECTRONIC EQU...
- Publication number 20190173175
- Publication date Jun 6, 2019
- Murata Manufacturing Co., Ltd.
- Kentaro MIKAWA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
ELECTRONIC DEVICE
- Publication number 20190157746
- Publication date May 23, 2019
- Murata Manufacturing Co., Ltd.
- Kenichi ISHIZUKA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
PHASE SHIFTER MODULE, MULTIPLEXER/DEMULTIPLEXER, AND COMMUNICATION...
- Publication number 20190068166
- Publication date Feb 28, 2019
- Murata Manufacturing Co., Ltd.
- Kenichi ISHIZUKA
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
SURFACE-MOUNTED LC DEVICE
- Publication number 20180211768
- Publication date Jul 26, 2018
- Murata Manufacturing Co., Ltd.
- KENICHI ISHIZUKA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
ANTENNA CIRCUIT AND COMMUNICATION DEVICE
- Publication number 20180205149
- Publication date Jul 19, 2018
- Murata Manufacturing Co., Ltd.
- Hiroshi NISHIDA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
COIL DEVICE
- Publication number 20180145653
- Publication date May 24, 2018
- Murata Manufacturing Co., Ltd.
- Kenichi ISHIZUKA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
MOBILE WIRELESS TERMINAL
- Publication number 20180103531
- Publication date Apr 12, 2018
- Murata Manufacturing Co., Ltd.
- Tsuyoshi TOKUNAGA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
PHASE SHIFTER, IMPEDANCE MATCHING CIRCUIT, AND COMMUNICATION TERMIN...
- Publication number 20180069524
- Publication date Mar 8, 2018
- Murata Manufacturing Co., Ltd.
- Kenichi ISHIZUKA
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
RESONANT CIRCUIT, BAND ELIMINATION FILTER, AND BAND PASS FILTER
- Publication number 20180041182
- Publication date Feb 8, 2018
- Murata Manufacturing Co.,Ltd.
- Hiroshi Nishida
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
LAMINATED COIL COMPONENT AND MATCHING CIRCUIT
- Publication number 20180025829
- Publication date Jan 25, 2018
- Murata Manufacturing Co., Ltd.
- Kenichi ISHIZUKA
- H01 - BASIC ELECTRIC ELEMENTS

Kenichi Ishizuka

Person

Patents Grantslast 30 patents

Antenna device and electronic equipment

Multi-terminal chip inductor

Circuit element

Antenna device and electronic apparatus

Filter circuit module, filter circuit element, filter circuit, and...

LC composite component and communication terminal device

Filter element

Matching circuit, matching circuit element, and communication device

Antenna coupling element, antenna device, and electronic device

Antenna apparatus

Inductance element, high-frequency transformer element, impedance c...

Antenna coupling element, antenna device, and electronic device

Filter circuit, filter circuit element, and multi/demultiplexer

Antenna device and electronic equipment

Surface-mounted LC device

Magnetic field coupling element, antenna device, and electronic equ...

Trap filter and filter circuit

Electronic device

Coil device

Phase shifter module, multiplexer/demultiplexer, and communication...

Resonant circuit, band elimination filter, and band pass filter

Transformer-type phase shifter, phase-shift circuit, and communicat...

Impedance conversion circuit, antenna apparatus, and wireless commu...

Antenna matching circuit, antenna device, and communication termina...

Mobile wireless terminal

Antenna matching circuit, antenna matching module, antenna device a...

Phase shifter, impedance matching circuit, and communication termin...

Impedance conversion element and communication device

Antenna circuit and communication device

Phase shifter, impedance matching circuit, multi/demultiplexer, and...

Patents Applicationslast 30 patents

ELECTRONIC COMPONENT

COIL COMPONENT

POWER SPLITTER AND COMMUNICATION APPARATUS

FILTER, FILTER MODULE, AND ELECTRONIC DEVICE

FILTER MODULE, FILTER ELEMENT, AND ELECTRONIC DEVICE

ANTENNA DEVICE AND ELECTRONIC APPARATUS

ANTENNA COUPLING ELEMENT, ANTENNA DEVICE, AND ELECTRONIC DEVICE

MULTI-TERMINAL CHIP INDUCTOR

CIRCUIT ELEMENT

ANTENNA DEVICE AND ELECTRONIC EQUIPMENT

LC COMPOSITE COMPONENT AND COMMUNICATION TERMINAL DEVICE

FILTER CIRCUIT MODULE, FILTER CIRCUIT ELEMENT, FILTER CIRCUIT, AND...

ANTENNA DEVICE AND ELECTRONIC APPARATUS

FILTER ELEMENT

MATCHING CIRCUIT, MATCHING CIRCUIT ELEMENT, AND COMMUNICATION DEVICE

ANTENNA APPARATUS

FILTER CIRCUIT, FILTER CIRCUIT ELEMENT, AND MULTI/DEMULTIPLEXER

ANTENNA COUPLING ELEMENT, ANTENNA DEVICE, AND ELECTRONIC DEVICE

TRAP FILTER AND FILTER CIRCUIT

ANTENNA DEVICE AND ELECTRONIC EQUIPMENT

MAGNETIC FIELD COUPLING ELEMENT, ANTENNA DEVICE, AND ELECTRONIC EQU...

ELECTRONIC DEVICE

PHASE SHIFTER MODULE, MULTIPLEXER/DEMULTIPLEXER, AND COMMUNICATION...

SURFACE-MOUNTED LC DEVICE

ANTENNA CIRCUIT AND COMMUNICATION DEVICE

COIL DEVICE

MOBILE WIRELESS TERMINAL

PHASE SHIFTER, IMPEDANCE MATCHING CIRCUIT, AND COMMUNICATION TERMIN...

RESONANT CIRCUIT, BAND ELIMINATION FILTER, AND BAND PASS FILTER

LAMINATED COIL COMPONENT AND MATCHING CIRCUIT