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Inventor

Masahiko Igaki

Inventor
Yokohama, JP

Overview

50→
Patents
1989–2018
Patent span
Physics
Primary field (CPC G)

Patents· 50 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

G01Dprimary
G01DMeasuring not specially adapted for a specific variable63%
B65HHandling thin or filamentary material, e.g. sheets, webs, cables8%
B41JTypewriters5%
G01PMeasuring linear or angular speed, acceleration, deceleration, or shock3%
H02NElectric machines not otherwise provided for3%
H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h103%
B25JManipulators2%
B29CShaping or joining of plastics2%
G02BOptical elements, systems or apparatus2%
G03GElectrography2%
PatentTitleYear
10,094,684Method of manufacturing rotary scale, rotary scale, rotary encoder, driving apparatus, image pickup apparatus and robot apparatus20189,329,058'Encoder that detects displacement of an object, and lens apparatus and camera having the same'20168,805,022'Velocity detection apparatus having two detectors'20148,527,236'Displacement detection apparatus and method of correcting error of scale used for displacement detection apparatus'20138,487,237'Rotary encoder and method of assembling the same'20138,422,025'Optical encoder for obtaining displacement information of object'20137,732,757'Origin detection method for optical encoder'20107,622,698'Detection head'20097,425,697'Origin detection method for optical encoder'20087,391,011'Optical encoder capable of detecting absolute position'20087,385,179'Optical encoder for measuring displacement'20087,358,865'Optical encoder and apparatus using optical encoder'20087,348,544'Optical encoder with discontinuous optical grating'20087,332,708'Optical encoder'20087,326,919'Optical encoder'20087,282,699'Optical encoder for improved detection of the absolute position of an origin point'20077,217,916'Optical encoder'20077,184,914'Sensor signal processor'20077,132,647'Optical encoder'20067,122,785'Rotation angle detection apparatus and resin rotary disk for the same'20067,099,790'Sensor signal processor'20067,087,888'Electrical division circuit for an optical encoder'20067,055,926'Liquid container, method for detecting liquid amount in liquid container, and liquid ejection recording apparatus'20067,045,770'Sensor using roof mirror/roof prism array scale, and apparatus equipped with the sensor'20067,043,054'Postal information input apparatus and a data display method thereof'20067,026,654'Package for optical semiconductor'20067,022,974'Sensor using roof mirror/roof prism array scale, and apparatus equipped with the sensor'20067,019,282'Optical encoder'20067,019,281'Rotation angle detection apparatus and rotary disk for same'20066,975,408'Reflection scale and displacement measurement apparatus using the same'20056,901,682'Rotation angle detecting apparatus and its rotary disc'20056,891,150'Optical scale formed from mold having fixed and movable platens'20056,869,158'Liquid container with identifying means and method for detecting state of mount of liquid container'20056,803,560'Optical encoder'20046,654,128'Displacement information detecting apparatus'20036,639,207'Optical rotary encoder and motor control apparatus'20035,506,681'Method for detecting a reference position and displacement detector using the same'19965,483,059'Signal processing method using comparator level adjustment in a displacement measuring device'19965,481,106'Encoder with an optical scale and interference of zero and first order diffraction beams'19965,359,193'Talbot\'s interference type optical encoder'19945,327,218'Method and apparatus for measuring displacement by using a diffracted inverted image projected on a diffraction grating'19945,323,001'Rotary encoder with scale member and interference of zero and first order diffraction beam'19945,302,821'Encoder using a birefringent element and a system including the same'19945,211,390'Sheet feeding device'19935,176,376'Vibration sheet feeder'19935,124,548'Encoder for detecting relative displacement having first and second scales and a light receiving device'19925,085,423'Sheet feeding device'19925,065,999'Sheet feeding device utilizing vibration waves'19915,062,622'Vibratory sheet feeder which uses phase adjustment to control the sheet feeding speed'19914,820,918'Optical encoder including transparent substrates having formed indicators therein'1989

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1989–2016Patents assigned to CANON KK (48)· patent assignee history
1989–2007Based in Tokyo, JP· patent location history
1996Based in Ohta, JP· patent location history
2003–2018Based in Yokohama, JP· patent location history
2005–2008Based in Kanagawa, JP· patent location history
2013–2014Patents assigned to IGAKI MASAHIKO (4)· patent assignee history
2013–2014Patents assigned to ARIMITSU YASUMICHI (2)· patent assignee history
2013–2018Patents assigned to CANON PRECISION INC (2)· patent assignee history
2013–2014Patents assigned to MIYAOKA YASUYUKI (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
CANON KK481989–2016
IGAKI MASAHIKOself42013–2014
ARIMITSU YASUMICHI22013–2014
CANON PRECISION INC22013–2018
MIYAOKA YASUYUKI22013–2014
Locations
LocationPatentsSpan
Yokohama, JP182003–2018
Kanagawa, JP162005–2008
Tokyo, JP151989–2007
Ohta, JP11996