Yohei Ishikawa

Person

Yokohama-shi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Transmission line connecting structure and transmission/reception d...
- Patent number 7,518,472
- Issue date Apr 14, 2009
- Murata Manufacturing Co., Ltd.
- Kazutaka Mukaiyama
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Antenna device radio unit and radar
- Patent number 7,253,781
- Issue date Aug 7, 2007
- Murata Manufacturing Co., Ltd.
- Tomoshige Furuhi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
High-frequency circuit device and transmitter/receiver
- Patent number 6,891,452
- Issue date May 10, 2005
- Murata Manufacturing Co., Ltd.
- Shigeyuki Mikami
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Guide marker and visual guide marker device
- Patent number 6,882,300
- Issue date Apr 19, 2005
- Murata Manufacturing Co., Ltd.
- Fuminori Nakamura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
COMPLEX CIRCUIT BOARD, NONRECIPROCAL CIRCUIT DEVICE, RESONATOR, FIL...
- Patent number 6,861,920
- Issue date Mar 1, 2005
- Murata Manufacturing Co., Ltd.
- Yohei Ishikawa
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Slot electrode dielectric resonator, inductor, capacitor, dielectri...
- Patent number 6,828,867
- Issue date Dec 7, 2004
- Murata Manufacturing Co., Ltd.
- Yohei Ishikawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
High-frequency circuit device using slot line and communication app...
- Patent number 6,778,031
- Issue date Aug 17, 2004
- Murata Manufacturing Co. Ltd.
- Takahiro Baba
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Planar dielectric integrated circuit with line conversion conductor...
- Patent number 6,717,492
- Issue date Apr 6, 2004
- Murata Manufacturing Co., Ltd.
- Yohei Ishikawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
COMPLEX CIRCUIT BOARD, NONRECIPROCAL CIRCUIT DEVICE, RESONATOR, FIL...
- Patent number 6,646,516
- Issue date Nov 11, 2003
- Murata Manufacturing Co., Ltd.
- Yohei Ishikawa
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Radio frequency module, communication device, and radar device
- Patent number 6,628,230
- Issue date Sep 30, 2003
- Murata Manufacturing Co., Ltd.
- Shigeyuki Mikami
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Antenna apparatus and transmission and receiving apparatus using same
- Patent number 6,563,477
- Issue date May 13, 2003
- Murata Manufacturing Co. Ltd.
- Yohei Ishikawa
- G01 - MEASURING TESTING
Information Patent Grant
Dielectric resonator, inductor, capacitor, dielectric filter, oscil...
- Patent number 6,556,107
- Issue date Apr 29, 2003
- Murata Manufacturing Co., Ltd.
- Yohei Ishikawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
High-frequency circuit device and communication apparatus
- Patent number 6,515,554
- Issue date Feb 4, 2003
- Murata Manufacturing Co. Ltd.
- Yohei Ishikawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Communication device having a spurious wave blocking circuit formed...
- Patent number 6,504,456
- Issue date Jan 7, 2003
- Murata Manufacturing Co., Ltd.
- Kenichi Iio
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Resonator, filter, duplexer, and communication device
- Patent number 6,486,754
- Issue date Nov 26, 2002
- Murata Manufacturing Co., Ltd.
- Seiji Hidaka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Complex circuit board with an electrode and air gap between dielect...
- Patent number 6,472,960
- Issue date Oct 29, 2002
- Murata Manufacturing Co., Ltd.
- Yohei Ishikawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Apparatus for measuring electrical characteristics of circuit
- Patent number 6,449,307
- Issue date Sep 10, 2002
- Murata Manufacturing Co., Ltd.
- Yohei Ishikawa
- G01 - MEASURING TESTING
Information Patent Grant
Planar dielectric integrated circuit
- Patent number 6,445,255
- Issue date Sep 3, 2002
- Murata Manufacturing Co., Ltd.
- Yohei Ishikawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Dielectric resonator, inductor, capacitor, dielectric filter, oscil...
- Patent number 6,411,181
- Issue date Jun 25, 2002
- Murata Manufacturing Co., Ltd.
- Yohei Ishikawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Antenna apparatus and transmission and receiving apparatus using th...
- Patent number 6,362,795
- Issue date Mar 26, 2002
- Murata Manufacturing Co., Ltd.
- Yohei Ishikawa
- G01 - MEASURING TESTING
Information Patent Grant
High frequency multi-layer module with electronic component receivi...
- Patent number 6,359,536
- Issue date Mar 19, 2002
- Murata Manufacturing Co., Ltd.
- Koichi Sakamoto
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
High-frequency circuit device and communication apparatus
- Patent number 6,323,740
- Issue date Nov 27, 2001
- Murata Manufacturing Co., Ltd.
- Yohei Ishikawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
High-frequency semiconductor device having microwave transmission l...
- Patent number 6,285,269
- Issue date Sep 4, 2001
- Murata Manufacturing Co., Ltd.
- Yohei Ishikawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Dielectric resonator, dielectric filter, dielectric duplexer, and m...
- Patent number 6,281,763
- Issue date Aug 28, 2001
- Murata Manufacturing Co., Ltd.
- Yohei Ishikawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
TM mode dielectric resonator and TM mode dielectric filter and dupl...
- Patent number 6,255,914
- Issue date Jul 3, 2001
- Murata Manufacturing Co., Ltd.
- Yohei Ishikawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Dielectric line switch and antenna device
- Patent number 6,246,298
- Issue date Jun 12, 2001
- Murata Manufacturing Co., Ltd.
- Yohei Ishikawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Radio-frequency radiation source, radio frequency radiation source...
- Patent number 6,188,360
- Issue date Feb 13, 2001
- Murata Manufacturing Co., Ltd.
- Takatoshi Kato
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Dielectric resonator formed by polygonal openings in a dielectric s...
- Patent number 6,184,758
- Issue date Feb 6, 2001
- Murata Manufacturing Co., Ltd.
- Yohei Ishikawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Dielectric lens antenna having heating body and radio equipment inc...
- Patent number 6,175,335
- Issue date Jan 16, 2001
- Murata Manufacturing Co., Ltd.
- Yohei Ishikawa
- G01 - MEASURING TESTING
Information Patent Grant
Planar dielectric integrated circuit
- Patent number 6,169,301
- Issue date Jan 2, 2001
- Murata Manufacturing Co., Ltd.
- Yohei Ishikawa
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
POWER STORAGE SYSTEM
- Publication number 20150219065
- Publication date Aug 6, 2015
- Yohei Ishikawa
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Transmission line connecting structure and transmission/reception d...
- Publication number 20070176713
- Publication date Aug 2, 2007
- Kazutaka Mukaiyama
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Application
Planar dielectric line, high-frequency active circuit, and transmit...
- Publication number 20070046402
- Publication date Mar 1, 2007
- Murata Manufacturing Co., Ltd.
- Kazutaka Mukaiyama
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Antenna , radio unit and radar
- Publication number 20060044199
- Publication date Mar 2, 2006
- Tomoshige Furuhi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Eyeglass interface device and security system
- Publication number 20050275714
- Publication date Dec 15, 2005
- Murata Manufacturing Co., Ltd.
- Yohei Ishikawa
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
Complex circuit board, nonreciprocal circuit device, resonator, fil...
- Publication number 20040041646
- Publication date Mar 4, 2004
- Murata Manufacturing Co., Ltd.
- Yohei Ishikawa
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Application
High-frequency circuit device and transmitter/receiver
- Publication number 20040041668
- Publication date Mar 4, 2004
- Shigeyuki Mikami
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
High-frequency circuit device using slot line and communication app...
- Publication number 20040036542
- Publication date Feb 26, 2004
- Takahiro Baba
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Antenna apparatus and transmission and receiving apparatus using same
- Publication number 20030214457
- Publication date Nov 20, 2003
- Murata Manufacturing Co., Ltd.
- Yohei Ishikawa
- G01 - MEASURING TESTING
Information Patent Application
Guide marker and visual guide marker device
- Publication number 20030214429
- Publication date Nov 20, 2003
- Fuminori Nakamura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Dielectric resonator, inductor, capacitor, dielectric filter, oscil...
- Publication number 20030137370
- Publication date Jul 24, 2003
- Murata Manufacturing Co., Ltd.
- Yohei Ishikawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Radio frequency module, communication device, and radar device
- Publication number 20030085836
- Publication date May 8, 2003
- Shigeyuki Mikami
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Application
Complex circuit board, nonreciprocal circuit device, resonator, fil...
- Publication number 20020196093
- Publication date Dec 26, 2002
- Murata Manufacturing Co., Ltd.
- Yohei Ishikawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Dielectric resonator, inductor, capacitor, dielectric filter, oscil...
- Publication number 20020140529
- Publication date Oct 3, 2002
- Murata Manufacturing Co., Ltd.
- Yohei Ishikawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Planar dielectric integrated circuit
- Publication number 20020089385
- Publication date Jul 11, 2002
- Murata Manufacturing Co., Ltd.
- Yohei Ishikawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
High-frequency circuit device and communication apparatus
- Publication number 20020047751
- Publication date Apr 25, 2002
- Murata Manufacturing Co., Ltd.
- Yohei Ishikawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Antenna apparatus and transmission and receiving apparatus using same
- Publication number 20020018022
- Publication date Feb 14, 2002
- Yohei Ishikawa
- G01 - MEASURING TESTING
Information Patent Application
High frequency circuit device and communication device
- Publication number 20010024150
- Publication date Sep 27, 2001
- Murata Manufacturing Co., Ltd.
- Kenichi Iio
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
ANTENNA APPARATUS AND TRANSMISSION AND RECEIVING APPARATUS USING TH...
- Publication number 20010013842
- Publication date Aug 16, 2001
- YOHEI ISHIKAWA
- G01 - MEASURING TESTING

Yohei Ishikawa

Person

Patents Grantslast 30 patents

Transmission line connecting structure and transmission/reception d...

Antenna device radio unit and radar

High-frequency circuit device and transmitter/receiver

Guide marker and visual guide marker device

COMPLEX CIRCUIT BOARD, NONRECIPROCAL CIRCUIT DEVICE, RESONATOR, FIL...

Slot electrode dielectric resonator, inductor, capacitor, dielectri...

High-frequency circuit device using slot line and communication app...

Planar dielectric integrated circuit with line conversion conductor...

COMPLEX CIRCUIT BOARD, NONRECIPROCAL CIRCUIT DEVICE, RESONATOR, FIL...

Radio frequency module, communication device, and radar device

Antenna apparatus and transmission and receiving apparatus using same

Dielectric resonator, inductor, capacitor, dielectric filter, oscil...

High-frequency circuit device and communication apparatus

Communication device having a spurious wave blocking circuit formed...

Resonator, filter, duplexer, and communication device

Complex circuit board with an electrode and air gap between dielect...

Apparatus for measuring electrical characteristics of circuit

Planar dielectric integrated circuit

Dielectric resonator, inductor, capacitor, dielectric filter, oscil...

Antenna apparatus and transmission and receiving apparatus using th...

High frequency multi-layer module with electronic component receivi...

High-frequency circuit device and communication apparatus

High-frequency semiconductor device having microwave transmission l...

Dielectric resonator, dielectric filter, dielectric duplexer, and m...

TM mode dielectric resonator and TM mode dielectric filter and dupl...

Dielectric line switch and antenna device

Radio-frequency radiation source, radio frequency radiation source...

Dielectric resonator formed by polygonal openings in a dielectric s...

Dielectric lens antenna having heating body and radio equipment inc...

Planar dielectric integrated circuit

Patents Applicationslast 30 patents

POWER STORAGE SYSTEM

Transmission line connecting structure and transmission/reception d...

Planar dielectric line, high-frequency active circuit, and transmit...

Antenna , radio unit and radar

Eyeglass interface device and security system

Complex circuit board, nonreciprocal circuit device, resonator, fil...

High-frequency circuit device and transmitter/receiver

High-frequency circuit device using slot line and communication app...

Antenna apparatus and transmission and receiving apparatus using same

Guide marker and visual guide marker device

Dielectric resonator, inductor, capacitor, dielectric filter, oscil...

Radio frequency module, communication device, and radar device

Complex circuit board, nonreciprocal circuit device, resonator, fil...

Dielectric resonator, inductor, capacitor, dielectric filter, oscil...

Planar dielectric integrated circuit

High-frequency circuit device and communication apparatus

Antenna apparatus and transmission and receiving apparatus using same

High frequency circuit device and communication device

ANTENNA APPARATUS AND TRANSMISSION AND RECEIVING APPARATUS USING TH...