LexDanaLexDanabeta
Inventor

Keiji Kashima

Inventor
Tokyo, JP

Overview

69→
Patents
1992–2018
Patent span
Physics
Primary field (CPC G)

Patents· 69 as inventor

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

G02Bprimary
G02BOptical elements, systems or apparatus40%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein37%
G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices4%
G09FDisplaying3%
Y10TTechnical subjects covered by former us classification3%
C09KMaterials for miscellaneous applications, not provided for elsewhere2%
F21VFunctional features or details of lighting devices or systems thereof2%
C08JWorking-up1%
H04NPictorial communication, e.g. television1%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests1%
PatentTitleYear
9,869,809'Backlight unit, liquid-crystal display apparatus, and stacked structure'20189,720,154'Patterned phase difference film and method for manufacturing same'20179,638,848'Patterned phase difference film and method for manufacturing same'20179,551,824'Light guide plate, method for producing light guide plate, surface light source device, and liquid crystal display device'20179,217,925'Method for producing pattern phase difference film, pattern phase difference film, and image display device'20158,968,836'Electromagnetic wave reflective film and method for producing same'20158,871,410'Method for producing pattern phase difference film'20148,659,738'Phase difference layer laminated body for three dimensional liquid crystal display device and manufacturing method thereof'20148,659,711'Phase difference layer laminated body for three dimensional liquid crystal display device and manufacturing method thereof'20148,599,334'Polarizing plate protection film, polarizing plate, and liquid crystal display device'20138,531,627'Optical rotation plate and liquid crystal display device using the same'20138,355,203'Optical functional film, retardation film, composition for forming optical functional layer and producing method of optical functional film'20138,305,524'Liquid crystal display polarizing plate, method for producing liquid crystal display polarizing plate, and liquid crystal display'20128,124,198'Retardation film and method for producing the same, optical functional film, polarizing film, and display device'20128,064,136'Optical functional film, retardation film, composition for forming optical functional layer and producing method of optical functional film'20117,932,971'Liquid-crystal display'20117,859,622'Retardation layer and liquid crystal display apparatus using the same'20107,719,643'Retardation layer and liquid crystal display apparatus using the same'20107,623,201'Liquid-crystal display'20097,508,474'Laminated retardation layer, its fabrication process, and liquid crystal display incorporating the same'2009RE040655'Polarization light splitting film, backlight system and liquid crystal display having particular diffusion layer under optical rotational selection layer'20097,411,645'Phase difference layer laminated body and manufacturing method thereof'20087,405,780'Liquid-crystal display'20087,405,786'Laminated retardation optical element, process of producing the same, and liquid crystal display'20087,359,018'Retardation optical element, process of producing the same, and liquid crystal display'20087,352,422'Retardation optical element and method of producing the same, and polarization element and liquid crystal display, each including retardation optical element'20087,342,619'Polarization light splitting film, backlight system and liquid crystal display'20087,324,180'Laminated retardation optical element, process of producing the same, and liquid crystal display'20087,256,847'Board with cholesteric layer and display having the board'20077,209,346'Information processing apparatus'20077,206,041'Liquid-crystal display'20077,202,926'Cholesteric reflective retardation optical element with directors at top surface of optical element parallel to those at the bottom surface of the optical element'20077,079,207'Liquid crystal display'20067,068,345'Optical device'20067,057,687'Method of patterning cholesteric film using a laser and optical element having the cholesteric film patterned by the method'20067,030,949'Optical display including a cholesteric layer, a display device and a diffusing layer on an exit side of the cholesteric layer'20066,977,099'Liquid crystalline transfer sheet and process of producing the same'20056,961,106'Retardation optical element having the function of reflecting ultraviolet light, and liquid crystal display comprising the same'20056,906,764'Reflective cholesteric filter'20056,891,585'Circularly-polarized-light-extracting optical element having chlosteric layer with changing chiral pitch'20056,891,584'Liquid-crystal display'20056,865,834'Display apparatus'20056,862,073'Circularly-polarized-light extracting optical element and process of producing the same'20056,825,984'Optical sheet lamination'20046,819,372'Back light device with diffusing sheet for a liquid crystal display apparatus'20046,700,707'Optical sheet lamination'20046,624,937'Polarization splitting sheet, optical sheet laminate, planar light source apparatus, and transmission-type display apparatus'20036,583,833'Bidirectional dichroic circular polarizer and reflection/transmission type liquid-crystal display device'20036,560,023'Optical lamination sheet'20036,559,911'Polarization light splitting film, backlight system and liquid crystal display having particular diffusion layer under optical rotation selection layer'20036,504,589'Backlight device and liquid crystal display device'20036,417,831'Diffused light controlling optical sheet, back light device and liquid crystal display apparatus'20026,333,817'Optical lamination sheet'20016,259,496'Backlight device and light transmission type display apparatus'20016,147,804'Optical sheet lamination'20006,147,734'Bidirectional dichroic circular polarizer and reflection/transmission type liquid-crystal display device'20006,104,455'Back light device and liquid crystal display apparatus'20005,995,288'Optical sheet optical sheet lamination light source device, and light-transmissive type display apparatus'19995,735,590'Backlighting device with a transparent sheet having straight ridges'19985,730,518'Backlighting device'19985,688,035'Backlighting device free of a bright line'19975,647,655'Back lighting device'19975,618,095'Backlighting device'19975,521,797'Backlighting device'19965,442,523'Backlighting device'19955,392,199'Back lighting device'19955,289,351'Backlighting device'19945,262,928'Back lighting device'19935,093,765'Back lighting device for a panel'1992

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1992–1998Patents assigned to TOSOH CORP (11)· patent assignee history
1992–1997Based in Kanagawa, JP· patent location history
1997–1998Based in Saitama, JP· patent location history
1999–2018Patents assigned to DAINIPPON PRINTING CO LTD (57)· patent assignee history
1999–2014Based in Shinjuku-ku, JP· patent location history
2000–2018Based in Tokyo, JP· patent location history
2011–2017Patents assigned to KASHIMA KEIJI (10)· patent assignee history
2011–2013Patents assigned to KURODA TAKASHI (4)· patent assignee history
2013–2015Patents assigned to HAMADA SATORU (3)· patent assignee history
2017Based in Tokorozawa, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
DAINIPPON PRINTING CO LTD571999–2018
TOSOH CORP111992–1998
KASHIMA KEIJIself102011–2017
KURODA TAKASHI42011–2013
HAMADA SATORU32013–2015
Locations
LocationPatentsSpan
Tokyo, JP302000–2018
Shinjuku-ku, JP251999–2014
Kanagawa, JP71992–1997
Saitama, JP31997–1998
Tokorozawa, JP12017