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Inventor

Tomohiro Sasagawa

Inventor
Tokyo, JP

Overview

42→
Patents
1993–2017
Patent span
Physics
Primary field (CPC G)

Patents· 42 as inventor

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

G02Bprimary
G02BOptical elements, systems or apparatus28%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein19%
G03BApparatus or arrangements for taking photographs or for projecting or viewing them15%
H04NPictorial communication, e.g. television12%
B23KSoldering or unsoldering5%
H10PGeneric processes or apparatus for the manufacture or treatment of devices covered by class h105%
H10DInorganic electric semiconductor devices4%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests4%
H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light3%
C09KMaterials for miscellaneous applications, not provided for elsewhere1%
PatentTitleYear
9,753,213'Planar light source device and liquid crystal display apparatus'20179,557,621'Liquid crystal display device'20178,879,143'Optical element, screen, and display device'20148,783,932'Backlight device and liquid crystal display apparatus'20148,469,525'Projection-type display apparatus'20138,403,494'Projection-type display apparatus with a projection optical system configured to reduce speckle'20138,337,024'Projection optical system and image display apparatus'20128,264,762'Image displaying apparatus and display controlling device'20128,139,166'Image projection apparatus and projection optical system'20128,134,526'Light diffusion element, screen, and image projector'20127,936,419'Illumination light source and image display apparatus'20117,830,609'Laser light beam coupling apparatus'20107,816,637'Image display projector having a drive unit for moving either a Fresnel lens or a diffusion member'20107,794,093'Projection display apparatus'20107,677,738'Image projector'20107,672,550'Illumination light source and image display apparatus'20107,652,819'Projection-type image display apparatus'20107,609,427'Image display apparatus and image display method'20097,576,805'Display device with light guide plate having antireflection portions on light incident surfaces'20097,397,521'Two sided liquid crystal display device having independently driven reflective and transmitting members for displaying both sides with different images at the same time'20087,210,836'Display unit and electronic apparatus with display unit'20077,178,922'Lamp, condensing optical system, and image display device'20077,139,053'Double-sided liquid crystal display device'20067,098,953'Imaging apparatus including a plurality of photoelectric transfer devices'20067,057,638'Stereoscopic image display apparatus'20067,002,649'Double-side liquid crystal display device and information appliance'20066,997,565'Lamp, polarization converting optical system, condensing optical system and image display device'20066,917,396'Light diffusion film, plane light source device and liquid crystal display apparatus for enhancing a constant luminance and diffusing a light'20056,753,548'Laser heat treatment method, laser heat treatment apparatus, and semiconductor device'20046,738,116'Reflective liquid crystal display device'20046,724,546'LIGHT CONVERGING OPTICAL SYSTEM FOR CONVERGING LIGHT ONTO A REFLECTING OPTICAL-SPATIAL MODULATOR ELEMENT AND IMAGE DISPLAYING APPARATUS FOR DISPLAYING AN IMAGE FORMED BY LIGHT REFLECTED BY THE REFLECTING OPTICAL-SPATIAL MODULATOR ELEMENT'20046,636,283'Front light, reflective liquid crystal display device and personal digital assistant'20036,573,161'Thin film semiconductor device fabrication process'20036,566,683'Laser heat treatment method, laser heat treatment apparatus, and semiconductor device'20036,454,452'Backlight for liquid crystal display device'20026,437,284'Optical system and apparatus for laser heat treatment and method for producing semiconductor devices by using the same'20026,219,116'Liquid crystal panel device having a light guide plate with L shaped ribs'20016,147,725'Liquid crystal panel module with polarization transformation for increased brightness'20006,110,291'Thin film forming apparatus using laser'20006,008,914'Laser transfer machining apparatus'19995,305,338'Switch device for laser'19945,258,994'Discharge-excited laser apparatus'1993

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1993–2017Patents assigned to MITSUBISHI ELECTRIC CORP (41)· patent assignee history
1993–2004Based in Hyogo, JP· patent location history
2000–2017Based in Tokyo, JP· patent location history
2003–2004Patents assigned to SEIKO EPSON CORP (3)· patent assignee history
2003Based in Suita, JP· patent location history
2004Based in Toyko, JP· patent location history
2012–2014Patents assigned to SASAGAWA TOMOHIRO (8)· patent assignee history
2012–2014Patents assigned to KUWATA MUNEHARU (4)· patent assignee history
2013–2014Patents assigned to KOJIMA KUNIKO (4)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
MITSUBISHI ELECTRIC CORP411993–2017
SASAGAWA TOMOHIROself82012–2014
KOJIMA KUNIKO42013–2014
KUWATA MUNEHARU42012–2014
SEIKO EPSON CORP32003–2004
Locations
LocationPatentsSpan
Tokyo, JP332000–2017
Hyogo, JP71993–2004
Toyko, JP12004
Suita, JP12003