Koh Ishizuka

Person

Urawa, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Displacement information detection apparatus
- Patent number 6,617,572
- Issue date Sep 9, 2003
- Canon Kabushiki Kaisha
- Koh Ishizuka
- G01 - MEASURING TESTING
Information Patent Grant
Displacement information detection apparatus
- Patent number 6,229,140
- Issue date May 8, 2001
- Canon Kabushiki Kaisha
- Koh Ishizuka
- G01 - MEASURING TESTING
Information Patent Grant
Apparatus for optically detecting displacement of an object using a...
- Patent number 5,680,211
- Issue date Oct 21, 1997
- Canon Kabushiki Kaisha
- Yasushi Kaneda
- G01 - MEASURING TESTING
Information Patent Grant
Rotary encoder measuring substantially coinciding phases of interfe...
- Patent number 5,661,296
- Issue date Aug 26, 1997
- Canon Kabushiki Kaisha
- Koh Ishizuka
- G01 - MEASURING TESTING
Information Patent Grant
Apparatus including a light-detecting element having a photo-electr...
- Patent number 5,657,125
- Issue date Aug 12, 1997
- Canon Kabushiki Kaisha
- Shigeki Kato
- G01 - MEASURING TESTING
Information Patent Grant
Apparatus for measuring relative displacement between the apparatus...
- Patent number 5,621,527
- Issue date Apr 15, 1997
- Canon Kabushiki Kaisha
- Yasushi Kaneda
- G01 - MEASURING TESTING
Information Patent Grant
Displacement detection apparatus using multiple displacement detect...
- Patent number 5,574,559
- Issue date Nov 12, 1996
- Canon Kabushiki Kaisha
- Yasushi Kaneda
- G01 - MEASURING TESTING
Information Patent Grant
Optical displacement sensor
- Patent number 5,569,913
- Issue date Oct 29, 1996
- Canon Kabushiki Kaisha
- Koh Ishizuka
- G01 - MEASURING TESTING
Information Patent Grant
Head positioning using a disk drive mounted to a rotating table
- Patent number 5,568,337
- Issue date Oct 22, 1996
- Canon Kabushiki Kaisha
- Tadashi Eguchi
- G11 - INFORMATION STORAGE
Information Patent Grant
Velocity information detecting apparatus
- Patent number 5,557,396
- Issue date Sep 17, 1996
- Canon Kabushiki Kaisha
- Koh Ishizuka
- G01 - MEASURING TESTING
Information Patent Grant
Rotation detecting apparatus and scale having a multi helix diffrac...
- Patent number 5,537,210
- Issue date Jul 16, 1996
- Canon Kabushiki Kaisha
- Yasushi Kaneda
- G01 - MEASURING TESTING
Information Patent Grant
Rotary detector having an optical system for guiding two diffracted...
- Patent number 5,532,819
- Issue date Jul 2, 1996
- Canon Kabushiki Kaisha
- Koh Ishizuka
- G01 - MEASURING TESTING
Information Patent Grant
Rotation information detection apparatus
- Patent number 5,498,870
- Issue date Mar 12, 1996
- Canon Kabushiki Kaisha
- Koh Ishizuka
- G01 - MEASURING TESTING
Information Patent Grant
Displacement detection apparatus
- Patent number 5,483,377
- Issue date Jan 9, 1996
- Canon Kabushiki Kaisha
- Yasushi Kaneda
- G01 - MEASURING TESTING
Information Patent Grant
Apparatus with light-emitting element and method for producing it
- Patent number 5,438,586
- Issue date Aug 1, 1995
- Canon Kabushiki Kaisha
- Satoshi Ishii
- G11 - INFORMATION STORAGE
Information Patent Grant
Apparatus for measuring relative movement using a diffraction grati...
- Patent number 5,436,724
- Issue date Jul 25, 1995
- Canon Kabushiki Kaisha
- Koh Ishizuka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Measuring method and measuring apparatus for determining the relati...
- Patent number 5,404,220
- Issue date Apr 4, 1995
- Canon Kabushiki Kaisha
- Seiji Takeuchi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Displacement information detection apparatus for receiving a diverg...
- Patent number 5,390,022
- Issue date Feb 14, 1995
- Canon Kabushiki Kaisha
- Koh Ishizuka
- G01 - MEASURING TESTING
Information Patent Grant
Encoder using a birefringent element and a system including the same
- Patent number 5,302,821
- Issue date Apr 12, 1994
- Canon Kabushiki Kaisha
- Masahiko Igaki
- G01 - MEASURING TESTING
Information Patent Grant
Displacement detecting device with integral optics
- Patent number 5,283,434
- Issue date Feb 1, 1994
- Canon Kabushiki Kaisha
- Koh Ishizuka
- G01 - MEASURING TESTING
Information Patent Grant
Encoder and scanning system using a scale having a non-uniform pitch
- Patent number 5,159,192
- Issue date Oct 27, 1992
- Canon Kabushiki Kaisha
- Tetsuharu Nishimura
- G01 - MEASURING TESTING
Information Patent Grant
Encoder with high resolving power and accuracy
- Patent number 5,146,085
- Issue date Sep 8, 1992
- Canon Kabushiki Kaisha
- Koh Ishizuka
- G11 - INFORMATION STORAGE
Information Patent Grant
Method of optically detecting position of object and position detec...
- Patent number 5,129,725
- Issue date Jul 14, 1992
- Canon Kabushiki Kaisha
- Koh Ishizuka
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Encoder for setting optical path lengths of related beams
- Patent number 5,126,562
- Issue date Jun 30, 1992
- Canon Kabushiki Kaisha
- Koh Ishizuka
- G01 - MEASURING TESTING
Information Patent Grant
Rotary encoder having a plurality of beams emitted by a diffraction...
- Patent number 5,101,102
- Issue date Mar 31, 1992
- Canon Kabushiki Kaisha
- Tetsuharu Nishimura
- G01 - MEASURING TESTING
Information Patent Grant
Device having signal interpolation circuit and displacement measuri...
- Patent number 5,067,089
- Issue date Nov 19, 1991
- Canon Kabushiki Kaisha
- Satoshi Ishii
- G01 - MEASURING TESTING
Information Patent Grant
Displacement measuring apparatus
- Patent number 5,066,130
- Issue date Nov 19, 1991
- Canon Kabushiki Kaisha
- Masaaki Tsukiji
- G01 - MEASURING TESTING
Information Patent Grant
Reference position detecting device utilizing a plurality of photo-...
- Patent number 5,059,791
- Issue date Oct 22, 1991
- Canon Kabushiki Kaisha
- Koh Ishizuka
- G01 - MEASURING TESTING
Information Patent Grant
Optical scale encoder with light intensity alarm
- Patent number 5,051,579
- Issue date Sep 24, 1991
- Canon Kabushiki Kaisha
- Masaaki Tsukiji
- G01 - MEASURING TESTING
Information Patent Grant
Scale for use for measurement of the displacement of an object to b...
- Patent number 5,038,491
- Issue date Aug 13, 1991
- Canon Kabushiki Kaisha
- Masaaki Tsukiji
- G01 - MEASURING TESTING

Koh Ishizuka

Person

Patents Grantslast 30 patents

Displacement information detection apparatus

Displacement information detection apparatus

Apparatus for optically detecting displacement of an object using a...

Rotary encoder measuring substantially coinciding phases of interfe...

Apparatus including a light-detecting element having a photo-electr...

Apparatus for measuring relative displacement between the apparatus...

Displacement detection apparatus using multiple displacement detect...

Optical displacement sensor

Head positioning using a disk drive mounted to a rotating table

Velocity information detecting apparatus

Rotation detecting apparatus and scale having a multi helix diffrac...

Rotary detector having an optical system for guiding two diffracted...

Rotation information detection apparatus

Displacement detection apparatus

Apparatus with light-emitting element and method for producing it

Apparatus for measuring relative movement using a diffraction grati...

Measuring method and measuring apparatus for determining the relati...

Displacement information detection apparatus for receiving a diverg...

Encoder using a birefringent element and a system including the same

Displacement detecting device with integral optics

Encoder and scanning system using a scale having a non-uniform pitch

Encoder with high resolving power and accuracy

Method of optically detecting position of object and position detec...

Encoder for setting optical path lengths of related beams

Rotary encoder having a plurality of beams emitted by a diffraction...

Device having signal interpolation circuit and displacement measuri...

Displacement measuring apparatus

Reference position detecting device utilizing a plurality of photo-...

Optical scale encoder with light intensity alarm

Scale for use for measurement of the displacement of an object to b...