Ichiro Tokunaga

Person

Miyagi-ken, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Magnetic encoder
- Patent number 7,876,091
- Issue date Jan 25, 2011
- Alps Electric Co., Ltd.
- Ichiro Tokunaga
- G01 - MEASURING TESTING
Information Patent Grant
Member position detection apparatus not affected by external magnet...
- Patent number 7,521,924
- Issue date Apr 21, 2009
- Alps Electric Co., Ltd.
- Hirofumi Okumura
- B60 - VEHICLES IN GENERAL
Information Patent Grant
GMR angle sensor for vehicles
- Patent number 7,405,560
- Issue date Jul 29, 2008
- Alps Electric Co., Ltd.
- Yoshikazu Shimizu
- G01 - MEASURING TESTING
Information Patent Grant
Angle sensor having low waveform distortion
- Patent number 7,265,540
- Issue date Sep 4, 2007
- Alps Electric Co., Ltd.
- Yoshihiro Sudo
- G01 - MEASURING TESTING
Information Patent Grant
Method of calculating compensation value for angle detecting sensor...
- Patent number 7,231,313
- Issue date Jun 12, 2007
- Alps Electric Co., Ltd.
- Yuichi Shonai
- G01 - MEASURING TESTING
Information Patent Grant
Angle sensor having low waveform distortion
- Patent number 7,193,411
- Issue date Mar 20, 2007
- Alps Electric Co., Ltd.
- Yoshihiro Sudo
- G01 - MEASURING TESTING
Information Patent Grant
Assembling method for producing a magnetic sensor with high output...
- Patent number 6,920,684
- Issue date Jul 26, 2005
- Alps Electric Co., Ltd.
- Yuichi Shonai
- G01 - MEASURING TESTING
Information Patent Grant
Magnetic switch capable of instantaneous switching of an output sig...
- Patent number 6,900,713
- Issue date May 31, 2005
- Alps Electric Co., Ltd.
- Masao Kasashima
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Seat position sensor
- Patent number 6,683,544
- Issue date Jan 27, 2004
- Alps Electric Co., Ltd.
- Ichiro Tokunaga
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Rotation angle sensor capable of accurately detecting rotation angle
- Patent number 6,640,652
- Issue date Nov 4, 2003
- Alps Electric Co., Ltd.
- Seiji Kikuchi
- G01 - MEASURING TESTING
Information Patent Grant
Apparatus for detecting rotational angle by employing two or more d...
- Patent number 6,539,329
- Issue date Mar 25, 2003
- Alps Electric Co., Ltd.
- Hironori Kato
- B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
Information Patent Grant
Magnetic sensor exhibiting large change in resistance at low extern...
- Patent number 6,191,577
- Issue date Feb 20, 2001
- Alps Electric Co., Ltd.
- Yoshito Sasaki
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Magnetic movement sensing device
- Patent number 5,117,319
- Issue date May 26, 1992
- Alps Electric Co., Ltd.
- Ichiro Tokunaga
- G01 - MEASURING TESTING
Information Patent Grant
Methods for assembling and adjusting a magnetic encoder device
- Patent number 5,081,756
- Issue date Jan 21, 1992
- Alps Electric Co., Ltd.
- Hiraku Abe
- G01 - MEASURING TESTING
Information Patent Grant
Magnetic recording medium for magnetic encoder
- Patent number 5,035,960
- Issue date Jul 30, 1991
- Alps Electric Co., Ltd.
- Tomoo Kamigaki
- G11 - INFORMATION STORAGE
Information Patent Grant
Precision Gap Magnetic Encode Device
- Patent number 4,959,574
- Issue date Sep 25, 1990
- Alps Electric Co., Ltd.
- Hidemasa Suzuki
- G01 - MEASURING TESTING
Information Patent Grant
Magnetic sensor
- Patent number 4,845,456
- Issue date Jul 4, 1989
- Alps Electric Co., Ltd.
- Hiraku Abe
- G01 - MEASURING TESTING
Information Patent Grant
Optical encoder with variable fiber/phase angle adjustment
- Patent number 4,733,071
- Issue date Mar 22, 1988
- Alps Electric Co., Ltd.
- Ichiro Tokunaga
- G01 - MEASURING TESTING
Information Patent Grant
Optical switch
- Patent number 4,705,348
- Issue date Nov 10, 1987
- Alps Electric Co., Ltd.
- Hiroshi Matsunaga
- G02 - OPTICS
Information Patent Grant
Light transmission device
- Patent number 4,684,210
- Issue date Aug 4, 1987
- Alps Electric Co., Ltd.
- Hiroshi Matsunaga
- G02 - OPTICS
Information Patent Grant
Rotary encoder wherein phase difference is adjusted by the radial p...
- Patent number 4,659,924
- Issue date Apr 21, 1987
- Alps Electric Co., Ltd.
- Ichiro Tokunaga
- G01 - MEASURING TESTING
Information Patent Grant
Reflection type optical rotary encoder
- Patent number 4,650,995
- Issue date Mar 17, 1987
- Alps Electric Co., Ltd.
- Ichiro Tokunaga
- G01 - MEASURING TESTING
Information Patent Grant
Method of fabricating rotor of optical rotary encoder
- Patent number 4,634,862
- Issue date Jan 6, 1987
- Alps Electric Co., Ltd.
- Hiroshi Matsunaga
- G01 - MEASURING TESTING
Information Patent Grant
Optical fiber sensor having shaped ends
- Patent number 4,617,460
- Issue date Oct 14, 1986
- Alps Electric Co., Ltd.
- Ichiro Tokunaga
- G01 - MEASURING TESTING
Information Patent Grant
Device for detecting rotating speed of thin shape motor
- Patent number 4,606,223
- Issue date Aug 19, 1986
- Alps Electric Co., Ltd.
- Hiroshi Matsunaga
- G01 - MEASURING TESTING
Information Patent Grant
Rotary encoder
- Patent number 4,580,871
- Issue date Apr 8, 1986
- Alps Electric Co., Ltd.
- Hiroshi Matsunaga
- G01 - MEASURING TESTING
Information Patent Grant
Rotary encoder
- Patent number 4,580,130
- Issue date Apr 1, 1986
- Alps Electric Co., Ltd.
- Ichiro Tokunaga
- G01 - MEASURING TESTING

Patents Applicationslast 30 patents

Information Patent Application
POSITION DETECTION DEVICE
- Publication number 20180216925
- Publication date Aug 2, 2018
- Alps Electric Co., Ltd.
- Yukiko YASUDA
- G01 - MEASURING TESTING
Information Patent Application
MAGNETIC SENSOR
- Publication number 20160341802
- Publication date Nov 24, 2016
- Alps Electric Co., Ltd.
- Fumihito KOIKE
- G01 - MEASURING TESTING
Information Patent Application
POSITION DETECTION DEVICE
- Publication number 20150022189
- Publication date Jan 22, 2015
- Alps Electric Co., Ltd.
- Yukiko YASUDA
- G01 - MEASURING TESTING
Information Patent Application
ANGLE SENSOR
- Publication number 20110133728
- Publication date Jun 9, 2011
- Alps Electric Co., Ltd.
- Ichiro TOKUNAGA
- G01 - MEASURING TESTING
Information Patent Application
ANGLE SENSOR
- Publication number 20100060268
- Publication date Mar 11, 2010
- Alps Electric Co., Ltd.
- Ichiro TOKUNAGA
- G01 - MEASURING TESTING
Information Patent Application
MAGNETIC SENSOR AND MAGNETIC ENCODER USING SAME
- Publication number 20090262466
- Publication date Oct 22, 2009
- Alps Electric Co., Ltd.
- Koji Kurata
- G01 - MEASURING TESTING
Information Patent Application
MAGNETIC DETECTOR
- Publication number 20090251830
- Publication date Oct 8, 2009
- Alps Electric Co., Ltd.
- Koji Kurata
- G01 - MEASURING TESTING
Information Patent Application
MAGNETIC ENCODER
- Publication number 20090001970
- Publication date Jan 1, 2009
- Alps Electric Co., Ltd.
- Ichiro Tokunaga
- G01 - MEASURING TESTING
Information Patent Application
MAGNETIC DETECTOR AND METHOD FOR MAKING THE SAME
- Publication number 20080211490
- Publication date Sep 4, 2008
- Koji Kurata
- G01 - MEASURING TESTING
Information Patent Application
MAGNETIC DETECTION DEVICE HAVING ELEMENT PROVIDED WITH MULTI-LAYERE...
- Publication number 20080054894
- Publication date Mar 6, 2008
- Alps Electric Co., Ltd.
- Toshio Sasaki
- G01 - MEASURING TESTING
Information Patent Application
GMR angle sensor for vehicles
- Publication number 20070164734
- Publication date Jul 19, 2007
- Alps Electric Co., Ltd.
- Yoshikazu Shimizu
- G01 - MEASURING TESTING
Information Patent Application
Angle sensor having low waveform distortion
- Publication number 20060214656
- Publication date Sep 28, 2006
- Alps Electric Co., Ltd.
- Yoshihiro Sudo
- G01 - MEASURING TESTING
Information Patent Application
Method of calculating compensation value for angle detecting sensor...
- Publication number 20060136169
- Publication date Jun 22, 2006
- Alps Electric Co., Ltd.
- Yuichi Shonai
- G01 - MEASURING TESTING
Information Patent Application
Angle sensor having low waveform distortion
- Publication number 20040263157
- Publication date Dec 30, 2004
- Alps Electric Co., Ltd.
- Yoshihiro Sudo
- G01 - MEASURING TESTING
Information Patent Application
Member position detection apparatus not affected by external magnet...
- Publication number 20040196029
- Publication date Oct 7, 2004
- Alps Electric Co., Ltd.
- Hirofumi Okumura
- B60 - VEHICLES IN GENERAL
Information Patent Application
Rotation angle sensor capable of accurately detecting rotation angle
- Publication number 20030070497
- Publication date Apr 17, 2003
- Alps Electric Co., Ltd.
- Seiji Kikuchi
- G01 - MEASURING TESTING
Information Patent Application
Assembling method for producing a magnetic sensor with high output...
- Publication number 20030041440
- Publication date Mar 6, 2003
- Alps Electric Co., Ltd.
- Yuichi Shonai
- G01 - MEASURING TESTING
Information Patent Application
Magnetic switch capable of instantaneous switching of an output sig...
- Publication number 20030030522
- Publication date Feb 13, 2003
- Alps Electric Co., Ltd.
- Masao Kasashima
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Seat position sensor
- Publication number 20020190874
- Publication date Dec 19, 2002
- Alps Electric Co., Ltd.
- Ichiro Tokunaga
- B60 - VEHICLES IN GENERAL
Information Patent Application
Apparatus for detecting rotational angle by employing two or more d...
- Publication number 20010020832
- Publication date Sep 13, 2001
- Alps Electric Co., Ltd.
- Hironori Kato
- B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS

Ichiro Tokunaga

Person

Patents Grantslast 30 patents

Magnetic encoder

Member position detection apparatus not affected by external magnet...

GMR angle sensor for vehicles

Angle sensor having low waveform distortion

Method of calculating compensation value for angle detecting sensor...

Angle sensor having low waveform distortion

Assembling method for producing a magnetic sensor with high output...

Magnetic switch capable of instantaneous switching of an output sig...

Seat position sensor

Rotation angle sensor capable of accurately detecting rotation angle

Apparatus for detecting rotational angle by employing two or more d...

Magnetic sensor exhibiting large change in resistance at low extern...

Magnetic movement sensing device

Methods for assembling and adjusting a magnetic encoder device

Magnetic recording medium for magnetic encoder

Precision Gap Magnetic Encode Device

Magnetic sensor

Optical encoder with variable fiber/phase angle adjustment

Optical switch

Light transmission device

Rotary encoder wherein phase difference is adjusted by the radial p...

Reflection type optical rotary encoder

Method of fabricating rotor of optical rotary encoder

Optical fiber sensor having shaped ends

Device for detecting rotating speed of thin shape motor

Rotary encoder

Rotary encoder

Patents Applicationslast 30 patents

POSITION DETECTION DEVICE

MAGNETIC SENSOR

POSITION DETECTION DEVICE

ANGLE SENSOR

ANGLE SENSOR

MAGNETIC SENSOR AND MAGNETIC ENCODER USING SAME

MAGNETIC DETECTOR

MAGNETIC ENCODER

MAGNETIC DETECTOR AND METHOD FOR MAKING THE SAME

MAGNETIC DETECTION DEVICE HAVING ELEMENT PROVIDED WITH MULTI-LAYERE...

GMR angle sensor for vehicles

Angle sensor having low waveform distortion

Method of calculating compensation value for angle detecting sensor...

Angle sensor having low waveform distortion

Member position detection apparatus not affected by external magnet...

Rotation angle sensor capable of accurately detecting rotation angle

Assembling method for producing a magnetic sensor with high output...

Magnetic switch capable of instantaneous switching of an output sig...

Seat position sensor

Apparatus for detecting rotational angle by employing two or more d...