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Inventor

Toshiaki Katsuma

Inventor
Saitama, JP

Overview

40→
Patents
1990–2015
Patent span
Physics
Primary field (CPC G)

Patents· 40 as inventor

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

G11Bprimary
G11BInformation storage based on relative movement between record carrier and transducer51%
G02BOptical elements, systems or apparatus41%
C03BManufacture, shaping, or supplementary processes2%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein2%
H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light2%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests2%
PatentTitleYear
9,176,304'Imaging lens'20159,170,404'Imaging lens'20159,036,269'Imaging lens and imaging apparatus'20159,030,764'Imaging lens and imaging apparatus'20159,019,634'Imaging lens and imaging apparatus'20158,902,516'Imaging lens and imaging apparatus'20148,345,356'Objective lens, optical pickup device, and optical recording/reproducing apparatus'20138,064,319'Objective lens, optical pickup device having the same, and recording and/or reproducing apparatus for optical recording medium, equipped with the optical pickup device'20118,009,544'Objective lens, optical pickup device having the same, and recording and/or reproducing apparatus for optical recording medium, equipped with the optical pickup device'20117,995,290'Objective lens, optical pickup device, and optical recording/reproducing apparatus'20117,755,852'Optical element molding method and optical element'20107,680,014'Objective optical system and optical pickup device using it'20107,613,098'Objective optical system for optical recording media and optical pickup device using it'20097,589,914'Molded lens'20097,580,601'Anamorphic aspherical beam focusing lens'20097,502,299'Objective optical system and optical pickup device using it'20097,457,223'Objective lens for optical recording media and optical pickup device using it'20087,443,779'Objective optical system for optical recording media and optical pickup device using it'20087,417,806'Lens with reference mounting surface'20087,298,687'Optical recording media objective lens and optical pickup device using it'20077,286,463'Objective lens and optical pickup device using it'20077,266,070'Objective lens for different optical recording media and an optical pickup device utilizing it'20077,220,064'Coupling optical system for optical communications'20077,072,272'Diffraction type optical pickup lens and optical pickup apparatus using the same'20066,970,412'Diffraction type lens which converges two wavelengths of light'20056,781,771'Objective lens for optical recording medium and optical pickup device using it'20046,646,817'Objective lens for optical recording media and optical pickup apparatus using the same'20036,552,851'Achromatic beam shaping prism'20036,545,821'Diffraction type lens and optical pickup apparatus using the same'20036,542,314'Objective lens for optical recording media and optical pickup apparatus using the same'20036,498,689'Objective lens for optical recording media and optical pickup apparatus using the same'20026,466,536'Objective lens for high-density optical recording medium'20026,166,854'Diffraction type filter having an aberration correction function and wave length selectivity'20006,094,308'Diffraction type filter having a wavelength selectivity'20006,084,710'Diffraction type filter having a wave length selectivity'20005,889,749'Optical pickup apparatus'19995,680,256'Lens for reading out optical recording medium'19975,661,607'Lens for reading out optical recording medium'19975,600,493'Finite conjugate lens system'19974,953,958'Variable magnification duplicator lens system'1990

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1990–2004Patents assigned to FUJI PHOTO OPTICAL CO LTD (15)· patent assignee history
1990–2005Based in Omiya, JP· patent location history
1997–2015Based in Saitama, JP· patent location history
2003–2010Based in Tokyo, JP· patent location history
2005–2013Patents assigned to FUJINON CORP (19)· patent assignee history
2011–2013Patents assigned to KATSUMA TOSHIAKI (2)· patent assignee history
2011–2013Patents assigned to KITAHARA YU (2)· patent assignee history
2014–2015Patents assigned to FUJIFILM CORP (6)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
FUJINON CORP192005–2013
FUJI PHOTO OPTICAL CO LTD151990–2004
FUJIFILM CORP62014–2015
KATSUMA TOSHIAKIself22011–2013
KITAHARA YU22011–2013
Locations
LocationPatentsSpan
Saitama, JP181997–2015
Tokyo, JP122003–2010
Omiya, JP101990–2005