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Inventor

Keiji Kataoka

Inventor
Kawagoe, JP

Overview

53→
Patents
1977–2017
Patent span
Physics
Primary field (CPC G)

Patents· 53 as inventor

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

G02Bprimary
G02BOptical elements, systems or apparatus26%
G11BInformation storage based on relative movement between record carrier and transducer19%
H04NPictorial communication, e.g. television11%
B41JTypewriters9%
B08BCleaning in general5%
G06KGraphical data reading5%
C03CChemical composition of glasses, glazes or vitreous enamels3%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein3%
G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices3%
H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light3%
PatentTitleYear
9,623,447'Washing apparatus comprising a capsule-shaped washing chamber'20177,806,987'Washing device and its work conveying method'20107,628,867'Washing device and its work conveying method'20097,542,642'Multi-beam generating device and optical recording device using the same'20097,477,813'Multi-beam light source, method for manufacturing the same, light scanning unit using the same, and image forming apparatus using the same'20097,347,629'Semiconductor laser module for optical scanner'20087,327,664'Optical recording apparatus'20087,290,551'Washing device and its work conveying method'20077,287,918'Semiconductor laser module'20077,287,535'Work washing apparatus'20076,753,991'Optical recording apparatus'20046,647,189'Image forming apparatus having an optical fiber array'20036,621,511'Optical recording apparatus including light-transmitting diffraction grating and multi-channel acousto-optic modulator'20035,995,130'Laser beam scanning apparatus and method providing controllable print density'19995,959,943'Information recording medium with clock information therein'19995,886,958'Information recording apparatus and method for modulated magneto-optical recording medium'19995,818,496'Exposure device of electrophotographic apparatus with optical path position deciding device'19985,737,133'Module for optical fiber receptacle used in a scanning device'19985,726,955'Magneto optical recording medium apparatus and method utilizing light pulse magnetic modulation recording'19985,719,832'Optical recording apparatus using optical fibers for guiding laser beams'19985,631,762'Multi-beam generating element and optical printing apparatus therewith'19975,579,292'Magneto-optical data recording apparatus using a sample-servo system for applying heating pulses to record data'19965,578,819'Optical recorder having a signal separation circuit and a FIFO memory circuit'19965,574,597'Light scanner and multi-beam generator using the same'19965,473,581'Magneto-optical data recording system continuously irradiating optical pulsers'19955,444,567'Light control device'19955,402,409'Optical recording apparatus and method for adding information in a sub-scanning direction and for deflecting a light beam to an optimum sub-scanning recording position'19955,325,172'Optical system for analyzing samples separated by a centrifugal separator'19945,296,995'Method of magnetically recording and reading data, magnetic recording medium, its production method and magnetic recording apparatus'19945,218,377'Laser printing device with control of oscillation amplitude'19935,170,383'Magneto-optical data recording system'19925,142,140'Apparatus for counting particles suspended in a fluid having a polarizing beam splitter'19925,134,426'Optical device for generating pattern having uniform light intensity distribution'19925,005,969'Optical projection apparatus with the function of controlling laser coherency'19914,929,044'Optical pickup using waveguide'19904,857,744'Optical projection printing apparatus wherein wafer mark has a grating pitch in the sagittal plane of the first optical system'19894,840,447'Light modulating device array'19894,802,153'Optical information processor and method for accessing rotating record carrier utilizing acousto-optic light deflector including holding a focus error signal during track jumping'19894,779,943'Optical system for semiconductor laser and optical information processing equipment utilizing the same'19884,759,628'Wavelength scanning interferometry and interferometer employing laser diode'19884,750,815'Method and apparatus for generating optical information'19884,688,880'Hologram lens'19874,689,479'Optical focussing and tracking system using a polarization prism for dividing the reflected beam'19874,656,618'Optical information recording and reproducing apparatus'19874,644,160'System for holding plural light beams in predetermined relative positions'19874,640,573'Lens-on-disc type optical scanning apparatus'19874,621,892'Light scanning device using lenses'19864,620,768'Optical scanning system'19864,561,717'Optical system for information processing'19854,274,101'Laser recorder with piezoelectric bimorph focal length vibrator'19814,253,102'Optical recording apparatus'19814,235,507'Optical system to condense light from a semiconductor laser into a circular spot'19804,021,606'Hologram apparatus'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977–1999Patents assigned to HITACHI LTD (29)· patent assignee history
1980–1999Based in Kawagoe, JP· patent location history
1985–2003Patents assigned to HITACHI KOKI KK (18)· patent assignee history
1992–1997Based in Katsuta, JP· patent location history
1993–2008Based in Ibaraki, JP· patent location history
1998–2009Based in Hitachinaka, JP· patent location history
2003–2004Patents assigned to HITACHI PRINTING SOLUTIONS LTD (2)· patent assignee history
2007–2017Patents assigned to FINE MACHINE KATAOKA CO LTD (5)· patent assignee history
2007–2009Patents assigned to RICOH PRINTING SYS LTD (5)· patent assignee history
2007–2010Based in Okazaki, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HITACHI LTD291977–1999
HITACHI KOKI KK181985–2003
FINE MACHINE KATAOKA CO LTD52007–2017
RICOH PRINTING SYS LTD52007–2009
HITACHI PRINTING SOLUTIONS LTD22003–2004
Locations
LocationPatentsSpan
Kawagoe, JP271980–1999
Ibaraki, JP111993–2008
Hitachinaka, JP51998–2009
Okazaki, JP42007–2010
Katsuta, JP41992–1997